| jawbone | (noun) the jaw in vertebrates that is hinged to open the mouth | Synonyms: jowl, lower jaw, lower jawbone, mandible, mandibula, mandibular bone, submaxilla |
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| jawbreaker | (noun) a word that is hard to pronounce | - |
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| (noun) a large round hard candy | - |
| jawfish | (noun) small large-mouthed tropical marine fishes common along sandy bottoms; males brood egg balls in their mouths; popular aquarium fishes | - |
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| jay | (noun) crested largely blue bird | - |
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| jaybird | (noun) common jay of eastern North America; bright blue with grey breast | Synonyms: blue jay, Cyanocitta cristata |
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| jaywalker | (noun) a reckless pedestrian who crosses a street illegally | - |
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| jazz | (noun) a genre of popular music that originated in New Orleans around 1900 and developed through increasingly complex styles | - |
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| (noun) a style of dance music popular in the 1920s; similar to New Orleans jazz but played by large bands | - |
| (noun) empty rhetoric or insincere or exaggerated talk | Synonyms: idle words, malarkey, malarky, nothingness, wind |
| jazzman | (noun) a musician who plays or composes jazz music | Synonyms: jazz musician |
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| jealousy | (noun) zealous vigilance | - |
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| (noun) a feeling of jealous envy (especially of a rival) | Synonyms: green-eyed monster |
| jean | (noun) a coarse durable twill-weave cotton fabric | Synonyms: denim, dungaree |
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| jeans | (noun) (used in the plural) close-fitting trousers of heavy denim for manual work or casual wear | Synonyms: blue jeans, denim |
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| jeep | (noun) a car suitable for traveling over rough terrain | Synonyms: landrover |
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| jeer | (noun) showing your contempt by derision | Synonyms: jeering, mockery, scoff, scoffing |
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| jeerer | (noun) someone who jeers or mocks or treats something with contempt or calls out in derision | Synonyms: flouter, mocker, scoffer |
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| jeering | (noun) showing your contempt by derision | Synonyms: jeer, mockery, scoff, scoffing |
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| jehad | (noun) a holy struggle or striving by a Muslim for a moral or spiritual or political goal | Synonyms: jihad |
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| jejuneness | (noun) the quality of being vapid and unsophisticated | Synonyms: jejunity, tameness, vapidity, vapidness |
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| (noun) quality of inadequate nutritive value | Synonyms: jejunity |
| (noun) lacking and evidencing lack of experience of life | Synonyms: callowness, juvenility |
| jejunitis | (noun) inflammation of the jejunum of the small intestine | - |
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| jejunity | (noun) the quality of being vapid and unsophisticated | Synonyms: jejuneness, tameness, vapidity, vapidness |
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| (noun) quality of inadequate nutritive value | Synonyms: jejuneness |
| jejunoileitis | (noun) inflammation of the jejunum and the ileum of the small intestine | - |
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| jejunostomy | (noun) surgical creation of an opening between the jejunum and the anterior abdominal wall; will allow artificial feeding | - |
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| jejunum | (noun) the part of the small intestine between the duodenum and the ileum | - |
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| jellaba | (noun) a loose cloak with a hood; worn in the Middle East and northern Africa | - |
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| jello | (noun) fruit-flavored dessert (trade mark Jell-O) made from a commercially prepared gelatin powder | Synonyms: Jell-O |
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| jelly | (noun) a preserve made of the jelled juice of fruit | - |
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| (noun) an edible jelly (sweet or pungent) made with gelatin and used as a dessert or salad base or a coating for foods | Synonyms: gelatin |
| (noun) any substance having the consistency of jelly or gelatin | - |
| jellyfish | (noun) any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans | - |
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| (noun) large siphonophore having a bladderlike float and stinging tentacles | Synonyms: man-of-war, Portuguese man-of-war |
| jellyleaf | (noun) herb widely distributed in tropics and subtropics used for forage and medicinally as a demulcent and having a fine soft bast stronger than jute; sometimes an aggressive weed | Synonyms: Queensland hemp, Sida rhombifolia |
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| jellyroll | (noun) thin sheet of sponge cake spread with jelly and then rolled up to make a cylindrical cake | Synonyms: Swiss roll |
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| jemmy | (noun) a short crowbar | Synonyms: jimmy |
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| jennet | (noun) female donkey | Synonyms: jenny, jenny ass |
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| jenny | (noun) female donkey | Synonyms: jennet, jenny ass |
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| jeopardy | (noun) a source of danger; a possibility of incurring loss or misfortune | Synonyms: endangerment, hazard, peril, risk |
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| jerboa | (noun) mouselike jumping rodent | - |
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| jeremiad | (noun) a long and mournful complaint | - |
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| jerk | (noun) an abrupt spasmodic movement | Synonyms: jerking, jolt, saccade |
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| (noun) a sudden abrupt pull | Synonyms: tug |
| (noun) raising a weight from shoulder height to above the head by straightening the arms | - |
| (noun) meat (especially beef) cut in strips and dried in the sun | Synonyms: jerked meat, jerky |
| (noun) a dull stupid fatuous person | Synonyms: dork |
| (noun) (mechanics) the rate of change of acceleration | - |
| jerker | (noun) someone who gives a strong sudden pull | Synonyms: yanker |
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| jerkin | (noun) a tight sleeveless and collarless jacket (often made of leather) worn by men in former times | - |
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| jerkiness | (noun) the quality of being spasmodic and irregular | Synonyms: fitfulness |
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| jerking | (noun) an abrupt spasmodic movement | Synonyms: jerk, jolt, saccade |
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| jerky | (noun) meat (especially beef) cut in strips and dried in the sun | Synonyms: jerk, jerked meat |
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| jeroboam | (noun) a large wine bottle (holds 4/5 of a gallon) | Synonyms: double-magnum |
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| jersey | (noun) a slightly elastic machine-knit fabric | - |
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| (noun) a close-fitting pullover shirt | Synonyms: T-shirt, tee shirt |
| jessamine | (noun) a climbing deciduous shrub with fragrant white or yellow or red flowers used in perfume and to flavor tea | Synonyms: common jasmine, Jasminum officinale, true jasmine |
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| jest | (noun) activity characterized by good humor | Synonyms: jocularity, joke |
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| (noun) a humorous anecdote or remark intended to provoke laughter | Synonyms: gag, jape, joke, laugh |
| jester | (noun) a professional clown employed to entertain a king or nobleman in the Middle Ages | Synonyms: fool, motley fool |
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| jet | (noun) an airplane powered by one or more jet engines | Synonyms: jet-propelled plane, jet plane |
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| (noun) an artificially produced flow of water | Synonyms: fountain |
| (noun) street names for ketamine | Synonyms: cat valium, green, honey oil, K, special K, super acid, super C |
| (noun) the occurrence of a sudden discharge (as of liquid) | Synonyms: spirt, spurt, squirt |
| (noun) atmospheric discharges (lasting 10 msec) bursting from the tops of giant storm clouds in blue cones that widen as they flash upward | Synonyms: blue jet, reverse lightning |
| (noun) a hard black form of lignite that takes a brilliant polish and is used in jewelry or ornamentation | - |
| jetliner | (noun) a large jet plane that carries passengers | - |
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| jetsam | (noun) the floating wreckage of a ship | Synonyms: flotsam |
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| (noun) the part of a ship's equipment or cargo that is thrown overboard to lighten the load in a storm | - |
| jetty | (noun) a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away | Synonyms: breakwater, bulwark, groin, groyne, mole, seawall |
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| jewel | (noun) a precious or semiprecious stone incorporated into a piece of jewelry | Synonyms: gem, precious stone |
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| (noun) a person who is as brilliant and precious as a piece of jewelry | Synonyms: gem |
| jeweler | (noun) someone in the business of selling jewelry | Synonyms: jeweller |
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| (noun) someone who makes jewelry | Synonyms: jeweller, jewelry maker |
| jeweller | (noun) someone in the business of selling jewelry | Synonyms: jeweler |
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| (noun) someone who makes jewelry | Synonyms: jeweler, jewelry maker |
| jewellery | (noun) an adornment (as a bracelet or ring or necklace) made of precious metals and set with gems (or imitation gems) | Synonyms: jewelry |
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| jewelry | (noun) an adornment (as a bracelet or ring or necklace) made of precious metals and set with gems (or imitation gems) | Synonyms: jewellery |
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| jewelweed | (noun) North American annual plant with usually yellow or orange flowers; grows chiefly on wet rather acid soil | Synonyms: celandine, Impatiens capensis, lady's earrings, orange balsam, touch-me-not |
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| jewfish | (noun) large dark grouper with a thick head and rough scales | Synonyms: Mycteroperca bonaci |
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| (noun) large important food fish of Australia; almost indistinguishable from the maigre | Synonyms: mulloway, Sciaena antarctica |
| jezebel | (noun) a shameless impudent scheming woman | - |
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| jiao | (noun) 10 jiao equal 1 yuan in China | - |
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| jib | (noun) any triangular fore-and-aft sail (set forward of the foremast) | - |
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| jibboom | (noun) a spar that extends the bowsprit | - |
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| jibe | (noun) an aggressive remark directed at a person like a missile and intended to have a telling effect | Synonyms: barb, dig, gibe, shaft, shot, slam |
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| jiffy | (noun) a very short time (as the time it takes the eye to blink or the heart to beat) | Synonyms: blink of an eye, flash, heartbeat, instant, New York minute, split second, trice, twinkling, wink |
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| jig | (noun) any of various old rustic dances involving kicking and leaping | - |
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| (noun) a device that holds a piece of machine work and guides the tools operating on it | - |
| (noun) a fisherman's lure with one or more hooks that is jerked up and down in the water | - |
| (noun) music in three-four time for dancing a jig | Synonyms: gigue |
| jigaboo | (noun) (ethnic slur) extremely offensive name for a Black person | Synonyms: nigga, nigger, nigra |
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| jigger | (noun) larval mite that sucks the blood of vertebrates including human beings causing intense irritation | Synonyms: chigger, harvest mite, redbug |
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| (noun) a small glass adequate to hold a single swallow of whiskey | Synonyms: pony, shot glass |
| (noun) any small mast on a sailing vessel; especially the mizzenmast of a yawl | Synonyms: jiggermast |
| jiggermast | (noun) any small mast on a sailing vessel; especially the mizzenmast of a yawl | Synonyms: jigger |
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| jiggle | (noun) a slight irregular shaking motion | Synonyms: joggle |
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| jigsaw | (noun) fine-toothed power saw with a narrow blade; used to cut curved outlines | Synonyms: fretsaw, scroll saw |
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| (noun) a portable power saw with a reciprocating blade; can be used with a variety of blades depending on the application and kind of cut; generally have a plate that rides on the surface that is being cut | Synonyms: reciprocating saw, saber saw |
| jihad | (noun) a holy struggle or striving by a Muslim for a moral or spiritual or political goal | Synonyms: jehad |
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| jillion | (noun) a very large indefinite number (usually hyperbole) | Synonyms: bazillion, billion, gazillion, million, trillion, zillion |
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| jilt | (noun) a woman who jilts a lover | - |
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| jimdandy | (noun) something excellent of its kind | Synonyms: crackerjack, jimhickey |
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| (noun) someone excellent of their kind | Synonyms: crackerjack, jimhickey |
| jimhickey | (noun) something excellent of its kind | Synonyms: crackerjack, jimdandy |
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| (noun) someone excellent of their kind | Synonyms: crackerjack, jimdandy |
| jimmies | (noun) bits of sweet chocolate used as a topping on e.g. ice cream | Synonyms: sprinkles |
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| jimmy | (noun) a short crowbar | Synonyms: jemmy |
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| jimsonweed | (noun) intensely poisonous tall coarse annual tropical weed having rank-smelling foliage, large white or violet trumpet-shaped flowers and prickly fruits | Synonyms: apple of Peru, common thorn apple, Datura stramonium, Jamestown weed, jimson weed |
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| jingle | (noun) a comic verse of irregular measure | Synonyms: doggerel, doggerel verse |
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| (noun) a metallic sound | Synonyms: jangle |
| jingo | (noun) an extreme bellicose nationalist | Synonyms: chauvinist, flag-waver, hundred-percenter, jingoist, patrioteer |
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| jingoism | (noun) fanatical patriotism | Synonyms: chauvinism, superpatriotism, ultranationalism |
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| (noun) an appeal intended to arouse patriotic emotions | Synonyms: flag waving |
| jingoist | (noun) an extreme bellicose nationalist | Synonyms: chauvinist, flag-waver, hundred-percenter, jingo, patrioteer |
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| jinks | (noun) noisy and mischievous merrymaking | Synonyms: high jinks, high jinx, hijinks |
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| jinnee | (noun) (Islam) an invisible spirit mentioned in the Koran and believed by Muslims to inhabit the earth and influence mankind by appearing in the form of humans or animals | Synonyms: djinn, djinni, djinny, genie, jinni |
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| jinni | (noun) (Islam) an invisible spirit mentioned in the Koran and believed by Muslims to inhabit the earth and influence mankind by appearing in the form of humans or animals | Synonyms: djinn, djinni, djinny, genie, jinnee |
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| jinrikisha | (noun) a small two-wheeled cart for one passenger; pulled by one person | Synonyms: ricksha, rickshaw |
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| jinx | (noun) an evil spell | Synonyms: curse, hex, whammy |
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| (noun) a person believed to bring bad luck to those around him | Synonyms: jonah |
| jiqui | (noun) Cuban timber tree with hard wood very resistant to moisture | Synonyms: Malpighia obovata |
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| jird | (noun) gerbil of northern Africa | - |
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| jitney | (noun) a vehicle carrying many passengers; used for public transport | Synonyms: autobus, bus, charabanc, coach, double-decker, motorbus, motorcoach, omnibus, passenger vehicle |
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| jitter | (noun) small rapid variations in a waveform resulting from fluctuations in the voltage supply or mechanical vibrations or other sources | - |
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| (noun) a small irregular movement | - |
| jitterbug | (noun) a jerky American dance that was popular in the 1940s | - |
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| jitteriness | (noun) the anxious feeling you have when you have the jitters | Synonyms: jumpiness, nervousness, restiveness |
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| jitters | (noun) extreme nervousness | Synonyms: heebie-jeebies, screaming meemies |
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| jiujitsu | (noun) a method of self-defense without weapons that was developed in China and Japan; holds and blows are supplemented by clever use of the attacker's own weight and strength | Synonyms: jujitsu, jujutsu |
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| jive | (noun) a style of jazz played by big bands popular in the 1930s; flowing rhythms but less complex than later styles of jazz | Synonyms: swing, swing music |
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| jnd | (noun) (psychophysics) the difference between two stimuli that (under properly controlled experimental conditions) is detected as often as it is undetected | Synonyms: just-noticeable difference |
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| job | (noun) the principal activity in your life that you do to earn money | Synonyms: business, line, line of work, occupation |
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| (noun) a specific piece of work required to be done as a duty or for a specific fee | Synonyms: chore, task |
| (noun) a crime (especially a robbery) | Synonyms: caper |
| (noun) a damaging piece of work | - |
| (noun) the responsibility to do something | - |
| (noun) the performance of a piece of work | - |
| (noun) a workplace; as in the expression `on the job' | - |
| (noun) an object worked on; a result produced by working | - |
| (noun) (computer science) a program application that may consist of several steps but is a single logical unit | - |
| (noun) a state of difficulty that needs to be resolved | Synonyms: problem |
| jobber | (noun) someone who buys large quantities of goods and resells to merchants rather than to the ultimate customers | Synonyms: middleman, wholesaler |
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| jobbery | (noun) corruptness among public officials | - |
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| jobcentre | (noun) a government office in a town where information about available jobs is displayed and where unemployment benefits are administered | - |
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| jobholder | (noun) an employee who holds a regular job | - |
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