| agranulocytosis | (noun) an acute blood disorder (often caused by radiation or drug therapy) characterized by severe reduction in granulocytes | Synonyms: agranulosis, granulocytopenia |
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| airlock | (noun) a chamber that provides access to space where air is under pressure | Synonyms: air lock |
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| allocation | (noun) the act of distributing by allotting or apportioning; distribution according to a plan | Synonyms: allotment, apportioning, apportionment, assignation, parceling, parcelling |
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| (noun) (computer science) the assignment of particular areas of a magnetic disk to particular data or instructions | Synonyms: storage allocation |
| (noun) a share set aside for a specific purpose | Synonyms: allotment |
| allocator | (noun) a person with authority to allot or deal out or apportion | Synonyms: distributor |
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| allocution | (noun) (rhetoric) a formal or authoritative address that advises or exhorts | - |
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| alocasia | (noun) any plant of the genus Alocasia having large showy basal leaves and boat-shaped spathe and reddish berries | Synonyms: elephant's ear, elephant ear |
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| ballock | (noun) one of the two male reproductive glands that produce spermatozoa and secrete androgens | Synonyms: ball, bollock, egg, nut, orchis, testicle, testis |
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| bilocation | (noun) the ability (said of certain Roman Catholic saints) to exist simultaneously in two locations | - |
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| bloc | (noun) a group of countries in special alliance | Synonyms: axis |
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| block | (noun) the act of obstructing or deflecting someone's movements | Synonyms: blocking |
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| (noun) a solid piece of something (usually having flat rectangular sides) | - |
| (noun) an obstruction in a pipe or tube | Synonyms: blockage, closure, occlusion, stop, stoppage |
| (noun) a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope | Synonyms: pulley-block, pulley, pulley block |
| (noun) a metal casting containing the cylinders and cooling ducts of an engine | Synonyms: cylinder block, engine block |
| (noun) a platform from which an auctioneer sells | Synonyms: auction block |
| (noun) housing in a large building that is divided into separate units | - |
| (noun) an inability to remember or think of something you normally can do; often caused by emotional tension | Synonyms: mental block |
| (noun) a number or quantity of related things dealt with as a unit | - |
| (noun) a rectangular area in a city surrounded by streets and usually containing several buildings | Synonyms: city block |
| (noun) (computer science) a sector or group of sectors that function as the smallest data unit permitted | - |
| (noun) a three-dimensional shape with six square or rectangular sides | Synonyms: cube |
| blockade | (noun) a war measure that isolates some area of importance to the enemy | Synonyms: encirclement |
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| (noun) prevents access or progress | - |
| blockage | (noun) the act of blocking | Synonyms: closure, occlusion |
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| (noun) an obstruction in a pipe or tube | Synonyms: block, closure, occlusion, stop, stoppage |
| (noun) the physical condition of blocking or filling a passage with an obstruction | Synonyms: obstruction |
| blockbuster | (noun) an unusually successful hit with widespread popularity and huge sales (especially a movie or play or recording or novel) | Synonyms: megahit, smash hit |
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| (noun) a large bomb used to demolish extensive areas (as a city block) | - |
| blocker | (noun) a class of drugs that inhibit (block) some biological process | Synonyms: blocking agent |
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| (noun) a football player whose responsibility is to block players attempting to stop an offensive play | - |
| blockhead | (noun) a stupid person; these words are used to express a low opinion of someone's intelligence | Synonyms: bonehead, dumbass, dunce, dunderhead, fuckhead, hammerhead, knucklehead, loggerhead, lunkhead, muttonhead, numskull, shithead |
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| blockhouse | (noun) a stronghold that is reinforced for protection from enemy fire; with apertures for defensive fire | - |
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| blocking | (noun) the act of obstructing or deflecting someone's movements | Synonyms: block |
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| bollock | (noun) a pulley-block at the head of a topmast | Synonyms: bullock block |
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| (noun) one of the two male reproductive glands that produce spermatozoa and secrete androgens | Synonyms: ball, ballock, egg, nut, orchis, testicle, testis |
| breechblock | (noun) a metal block in breech-loading firearms that is withdrawn to insert a cartridge and replaced to close the breech before firing | Synonyms: breech closer |
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| bullock | (noun) castrated bull | Synonyms: steer |
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| (noun) young bull | - |
| cellblock | (noun) a division of a prison (usually consisting of several cells) | Synonyms: ward |
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| cephalochordate | (noun) fish-like animals having a notochord rather than a true spinal column | - |
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| chadlock | (noun) weedy Eurasian plant often a pest in grain fields | Synonyms: Brassica kaber, charlock, field mustard, Sinapis arvensis, wild mustard |
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| charlock | (noun) weedy Eurasian plant often a pest in grain fields | Synonyms: Brassica kaber, chadlock, field mustard, Sinapis arvensis, wild mustard |
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| circumlocution | (noun) a style that involves indirect ways of expressing things | Synonyms: ambage, periphrasis |
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| (noun) an indirect way of expressing something | Synonyms: indirect expression |
| clochard | (noun) a wanderer who has no established residence or visible means of support | Synonyms: drifter, floater, vagabond, vagrant |
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| cloche | (noun) a woman's close-fitting hat that resembles a helmet | - |
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| (noun) a low transparent cover put over young plants to protect them from cold | - |
| clock | (noun) a timepiece that shows the time of day | - |
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| clocking | (noun) the time taken to traverse a measured course | - |
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| clockmaker | (noun) someone whose occupation is making or repairing clocks and watches | Synonyms: clocksmith |
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| clocks | (noun) European weed naturalized in southwestern United States and Mexico having reddish decumbent stems with small fernlike leaves and small deep reddish-lavender flowers followed by slender fruits that stick straight up; often grown for forage | Synonyms: alfilaria, alfileria, Erodium cicutarium, filaree, filaria, pin clover, pin grass, redstem storksbill |
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| clocksmith | (noun) someone whose occupation is making or repairing clocks and watches | Synonyms: clockmaker |
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| clockwork | (noun) any mechanism of geared wheels that is driven by a coiled spring; resembles the works of a mechanical clock | - |
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| collocation | (noun) the act of positioning close together (or side by side) | Synonyms: apposition, juxtaposition |
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| (noun) a grouping of words in a sentence | - |
| deadlock | (noun) a situation in which no progress can be made or no advancement is possible | Synonyms: dead end, impasse, stalemate, standstill |
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| diplococcus | (noun) Gram-positive bacteria usually occurring in pairs | - |
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| dislocation | (noun) the act of disrupting an established order so it fails to continue | Synonyms: breakdown |
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| (noun) an event that results in a displacement or discontinuity | Synonyms: disruption |
| (noun) a displacement of a part (especially a bone) from its normal position (as in the shoulder or the vertebral column) | - |
| doorlock | (noun) a lock on an exterior door | - |
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| dreadlock | (noun) one of many long thin braids of hair radiating from the scalp; popularized by Rastafarians | - |
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| echolocation | (noun) determining the location of something by measuring the time it takes for an echo to return from it | Synonyms: echo sounding |
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| electrolocation | (noun) The use of electroreception to locate surrounding objects. | - |
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| elocution | (noun) an expert manner of speaking involving control of voice and gesture | - |
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| elocutionist | (noun) a public speaker trained in voice production and gesture and delivery | - |
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| encephalocele | (noun) protrusion of brain tissue through a congenital fissure in the skull | - |
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| fetlock | (noun) projection behind and above a horse's hoof | - |
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| (noun) the joint between the cannon bone and the pastern | Synonyms: fetlock joint |
| firelock | (noun) a muzzle loader that had a flintlock type of gunlock | Synonyms: flintlock |
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| flintlock | (noun) an obsolete gunlock that has flint embedded in the hammer; the flint makes a spark that ignites the charge | - |
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| (noun) a muzzle loader that had a flintlock type of gunlock | Synonyms: firelock |
| floc | (noun) a small loosely aggregated mass of flocculent material suspended in or precipitated from a liquid | Synonyms: floccule |
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| flocculation | (noun) the process of flocculating; forming woolly cloudlike aggregations | - |
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| flocculator | (noun) An apparatus used in the process of flocculation. | - |
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| floccule | (noun) a small loosely aggregated mass of flocculent material suspended in or precipitated from a liquid | Synonyms: floc |
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| flock | (noun) a group of birds | - |
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| (noun) a group of sheep or goats | Synonyms: fold |
| (noun) a church congregation guided by a pastor | - |
| (noun) an orderly crowd | Synonyms: troop |
| (noun) (often followed by `of') a large number or amount or extent | Synonyms: batch, deal, good deal, great deal, hatful, heap, lot, mass, mess, mickle, mint, mountain, muckle, passel, peck, pile, plenty, pot, quite a little, raft, sight, slew, spate, stack, tidy sum, wad |
| footlocker | (noun) a trunk for storing personal possessions; usually kept at the foot of a bed (as in a barracks) | Synonyms: locker |
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| forelock | (noun) a lock of a horse's mane that grows forward between the ears | Synonyms: foretop |
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| (noun) a lock of hair growing (or falling) over the forehead | - |
| glochid | (noun) a barbed spine or bristle (often tufted on cacti) | Synonyms: glochidium |
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| glochidium | (noun) a barbed spine or bristle (often tufted on cacti) | Synonyms: glochid |
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| glockenspiel | (noun) a percussion instrument consisting of a set of graduated metal bars mounted on a frame and played with small hammers | Synonyms: orchestral bells |
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| goldilocks | (noun) early-flowering perennial of southern and southeastern Europe with flower heads resembling those of goldenrod | Synonyms: Aster linosyris, goldilocks aster, Linosyris vulgaris |
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| granulocyte | (noun) a leukocyte that has granules in its cytoplasm | - |
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| granulocytopenia | (noun) an acute blood disorder (often caused by radiation or drug therapy) characterized by severe reduction in granulocytes | Synonyms: agranulocytosis, agranulosis |
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| gridlock | (noun) a traffic jam so bad that no movement is possible | - |
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| guilloche | (noun) an architectural decoration formed by two intersecting wavy bands | - |
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| gunlock | (noun) the action that ignites the charge in a firearm | Synonyms: firing mechanism |
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| halocarbon | (noun) one of various compounds of carbon and any of the halogens | - |
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| hammerlock | (noun) a wrestling hold in which the opponent's arm is twisted up behind his back | - |
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| handlock | (noun) shackle that consists of a metal loop that can be locked around the wrist; usually used in pairs | Synonyms: cuff, handcuff, manacle |
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| havelock | (noun) a cloth covering for a service cap with a flap extending over the back of the neck to protect the neck from direct rays of the sun | - |
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| headlock | (noun) a wrestling hold in which the opponent's head is locked between the crook of your elbow and the side of your body | - |
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| hemlock | (noun) an evergreen tree, could refer to any one of a genus of conifers named Tsuga | Synonyms: hemlock tree |
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| (noun) soft coarse splintery wood of a hemlock tree especially the western hemlock | - |
| (noun) large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers; usually found in damp habitats; all parts extremely poisonous | Synonyms: California fern, Conium maculatum, Nebraska fern, poison hemlock, poison parsley, winter fern |
| (noun) poisonous drug derived from an Eurasian plant of the genus Conium | - |
| hillock | (noun) a small natural hill | Synonyms: hammock, hummock, knoll, mound |
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| holocaust | (noun) an act of mass destruction and loss of life (especially in war or by fire) | - |
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| holocephalan | (noun) fish with high compressed head and a body tapering off into a long tail | Synonyms: holocephalian |
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| holocephalian | (noun) fish with high compressed head and a body tapering off into a long tail | Synonyms: holocephalan |
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| hypervelocity | (noun) excessive velocity | - |
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| interlock | (noun) the act of interlocking or meshing | Synonyms: interlocking, mesh, meshing |
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| (noun) a device that prevents an automotive engine from starting | Synonyms: ignition interlock |
| interlocking | (noun) the act of interlocking or meshing | Synonyms: interlock, mesh, meshing |
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| (noun) contact by fitting together | Synonyms: engagement, mesh, meshing |
| interlocutor | (noun) a person who takes part in a conversation | Synonyms: conversational partner |
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| (noun) the performer in the middle of a minstrel line who engages the others in talk | Synonyms: middleman |
| kilocalorie | (noun) a unit of heat equal to the amount of heat required to raise the temperature of one kilogram of water by one degree at one atmosphere pressure; used by nutritionists to characterize the energy-producing potential in food | Synonyms: Calorie, kilogram calorie, large calorie, nutritionist's calorie |
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| kilocycle | (noun) one thousand periods per second | Synonyms: kc, kHz, kilocycle per second, kilohertz |
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| local | (noun) public transport consisting of a bus or train that stops at all stations or stops | - |
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| (noun) anesthetic that numbs a particular area of the body | Synonyms: local anaesthetic, local anesthetic, topical anaesthetic, topical anesthetic |
| locale | (noun) the scene of any event or action (especially the place of a meeting) | Synonyms: locus, venue |
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| localisation | (noun) a determination of the place where something is | Synonyms: fix, localization, locating, location |
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| (noun) (physiology) the principle that specific functions have relatively circumscribed locations in some particular part or organ of the body | Synonyms: localisation of function, localisation principle, localization, localization of function, localization principle |
| localism | (noun) a partiality for some particular place | Synonyms: provincialism, sectionalism |
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| (noun) a phrase or pronunciation that is peculiar to a particular locality | - |
| locality | (noun) a surrounding or nearby region | Synonyms: neck of the woods, neighborhood, neighbourhood, vicinity |
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| localization | (noun) a determination of the place where something is | Synonyms: fix, localisation, locating, location |
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| (noun) (physiology) the principle that specific functions have relatively circumscribed locations in some particular part or organ of the body | Synonyms: localisation, localisation of function, localisation principle, localization of function, localization principle |
| localness | (noun) The state or condition of being from a nearby location. | - |
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| locater | (noun) a person who fixes the boundaries of land claims | Synonyms: locator |
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| locating | (noun) the act of putting something in a certain place | Synonyms: emplacement, location, placement, position, positioning |
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| (noun) a determination of the place where something is | Synonyms: fix, localisation, localization, location |
| location | (noun) a point or extent in space; a point or extent in space | - |
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| (noun) a determination of the place where something is | Synonyms: fix, localisation, localization, locating |
| (noun) the act of putting something in a certain place | Synonyms: emplacement, locating, placement, position, positioning |
| (noun) a workplace away from a studio at which some or all of a movie may be made | - |
| locative | (noun) the semantic role of the noun phrase that designates the place of the state or action denoted by the verb | Synonyms: locative role |
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| (noun) A case used to indicate place, or the place where, or wherein. | Synonyms: locative case |
| locator | (noun) a person who fixes the boundaries of land claims | Synonyms: locater |
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| loch | (noun) Scottish word for a lake | - |
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| (noun) a long narrow inlet of the sea in Scotland (especially when it is nearly landlocked) | - |
| lochia | (noun) substance discharged from the vagina (cellular debris and mucus and blood) that gradually decreases in amount during the weeks following childbirth | - |
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| lock | (noun) any wrestling hold in which some part of the opponent's body is twisted or pressured | - |
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| (noun) a fastener fitted to a door or drawer to keep it firmly closed | - |
| (noun) a restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key | Synonyms: ignition lock |
| (noun) enclosure consisting of a section of canal that can be closed to control the water level; used to raise or lower vessels that pass through it | Synonyms: lock chamber |
| (noun) a mechanism that detonates the charge of a gun | - |
| (noun) a strand or cluster of hair | - |
| lockage | (noun) passage through a lock in a canal or waterway | - |
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| (noun) a system of locks in a canal or waterway | - |
| (noun) a fee charged for passage through a lock in a canal or waterway | - |
| lockbox | (noun) a fireproof metal strongbox (usually in a bank) for storing valuables | Synonyms: deposit box, safe-deposit, safe-deposit box, safety-deposit, safety deposit box |
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| lockdown | (noun) the act of confining prisoners to their cells (usually to regain control during a riot) | - |
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| locker | (noun) a storage compartment for clothes and valuables; usually it has a lock | Synonyms: cabinet, storage locker |
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| (noun) a trunk for storing personal possessions; usually kept at the foot of a bed (as in a barracks) | Synonyms: footlocker |
| (noun) a fastener that locks or closes | - |
| locket | (noun) a small ornamental case; usually contains a picture or a lock of hair and is worn on a necklace | - |
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| locking | (noun) the act of locking something up to protect it | Synonyms: lockup |
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