| berceuse | (noun) a quiet song intended to lull a child to sleep | Synonyms: cradlesong, lullaby |
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| bereaved | (noun) a person who has suffered the death of someone they loved | Synonyms: bereaved person |
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| bereavement | (noun) state of sorrow over the death or departure of a loved one | Synonyms: mourning |
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| beret | (noun) a cap with no brim or bill; made of soft cloth | - |
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| berg | (noun) a large mass of ice floating at sea; usually broken off of a polar glacier | Synonyms: iceberg |
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| bergall | (noun) common in north Atlantic coastal waters of the United States | Synonyms: cunner, Tautogolabrus adspersus |
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| bergamot | (noun) small tree with pear-shaped fruit whose oil is used in perfumery; Italy | Synonyms: bergamot orange, Citrus bergamia |
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| bergenia | (noun) any plant of the genus Bergenia; valued as an evergreen ground cover and for the spring blossoms | - |
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| beriberi | (noun) avitaminosis caused by lack of thiamine (vitamin B1) | - |
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| berk | (noun) a stupid person who is easy to take advantage of | - |
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| berkelium | (noun) a radioactive transuranic element; discovered by bombarding americium with helium | Synonyms: atomic number 97, Bk |
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| berlin | (noun) a limousine with a glass partition between the front and back seats | - |
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| berm | (noun) a narrow edge of land (usually unpaved) along the side of a road | Synonyms: shoulder |
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| (noun) a narrow ledge or shelf typically at the top or bottom of a slope | - |
| beroe | (noun) delicately iridescent thimble-shaped ctenophores | - |
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| berretta | (noun) a stiff cap with ridges across the crown; worn by Roman Catholic clergy | Synonyms: biretta, birretta |
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| berry | (noun) any of numerous small and pulpy edible fruits; used as desserts or in making jams and jellies and preserves | - |
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| (noun) a small fruit having any of various structures, e.g., simple (grape or blueberry) or aggregate (blackberry or raspberry) | - |
| berserk | (noun) one of the ancient Norse warriors legendary for working themselves into a frenzy before a battle and fighting with reckless savagery and insane fury | Synonyms: berserker |
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| berserker | (noun) one of the ancient Norse warriors legendary for working themselves into a frenzy before a battle and fighting with reckless savagery and insane fury | Synonyms: berserk |
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| berth | (noun) a job in an organization | Synonyms: office, place, position, post, situation |
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| (noun) a bed on a ship or train; usually in tiers | Synonyms: built in bed, bunk |
| (noun) a place where a craft can be made fast | Synonyms: moorage, mooring, slip |
| beryl | (noun) the chief source of beryllium; colored transparent varieties are valued as gems | - |
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| beryllium | (noun) a light strong brittle grey toxic bivalent metallic element | Synonyms: atomic number 4, Be, glucinium |
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| besieger | (noun) an enemy who lays siege to your position | - |
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| (noun) an energetic petitioner | - |
| bestower | (noun) person who makes a gift of property | Synonyms: conferrer, donor, giver, presenter |
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| bestseller | (noun) a book that has had a large and rapid sale | Synonyms: best seller |
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| betrayer | (noun) a person who says one thing and does another | Synonyms: double-crosser, double-dealer, traitor, two-timer |
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| (noun) one who reveals confidential information to the police or other authority | Synonyms: blabber, informer, rat, squealer |
| better | (noun) something superior in quality or condition or effect | - |
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| (noun) the superior one of two alternatives | - |
| (noun) someone who bets | Synonyms: bettor, punter, wagerer |
| (noun) a superior person having claim to precedence | - |
| betterment | (noun) the act of relieving ills and changing for the better | Synonyms: amelioration, melioration |
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| (noun) a change for the better; progress in development | Synonyms: advance, improvement |
| (noun) an improvement that adds to the value of a property or facility | - |
| beverage | (noun) any liquid suitable for drinking | Synonyms: drink, drinkable, potable |
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| bewilderment | (noun) confusion resulting from failure to understand | Synonyms: bafflement, befuddlement, bemusement, mystification, obfuscation, puzzlement |
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| bewitchery | (noun) magnetic personal charm | Synonyms: animal magnetism, beguilement |
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| bialystoker | (noun) flat crusty-bottomed onion roll | Synonyms: bialy |
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| bibliographer | (noun) someone trained in compiling bibliographies | - |
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| bicker | (noun) a quarrel about petty points | Synonyms: bickering, fuss, pettifoggery, spat, squabble, tiff |
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| bickering | (noun) a quarrel about petty points | Synonyms: bicker, fuss, pettifoggery, spat, squabble, tiff |
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| bicycler | (noun) a person who rides a bicycle | Synonyms: bicyclist, biker, cyclist, wheeler |
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| bidder | (noun) someone who makes an offer | - |
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| (noun) someone who makes a bid at cards | - |
| bier | (noun) a stand to support a corpse or a coffin prior to burial | - |
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| (noun) a coffin along with its stand | - |
| biker | (noun) a person who rides a bicycle | Synonyms: bicycler, bicyclist, cyclist, wheeler |
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| bikers | (noun) originally a British youth subculture that evolved out of the teddy boys in the 1960s; wore black leather jackets and jeans and boots; had greased hair and rode motorcycles and listened to rock'n'roll; were largely unskilled manual laborers | Synonyms: rockers |
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| bilateralism | (noun) the property of being symmetrical about a vertical plane | Synonyms: bilateral symmetry, bilaterality |
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| bilaterality | (noun) the property of being symmetrical about a vertical plane | Synonyms: bilateral symmetry, bilateralism |
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| bilberry | (noun) blue-black berries similar to American blueberries | Synonyms: European blueberry, whortleberry |
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| (noun) erect blueberry of western United States having solitary flowers and somewhat sour berries | Synonyms: mountain blue berry, thin-leaved bilberry, Viccinium membranaceum |
| (noun) erect European blueberry having solitary flowers and blue-black berries | Synonyms: blaeberry, Viccinium myrtillus, whinberry, whortleberry |
| bilgewater | (noun) pretentious or silly talk or writing | Synonyms: baloney, boloney, bosh, drool, humbug, taradiddle, tarradiddle, tommyrot, tosh, twaddle |
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| bimester | (noun) a period of 2 months | - |
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| binder | (noun) something used to tie or bind | Synonyms: ligature |
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| (noun) holds loose papers or magazines | Synonyms: ring-binder |
| (noun) a machine that cuts grain and binds it in sheaves | Synonyms: reaper binder |
| (noun) something used to bind separate particles together or facilitate adhesion to a surface | - |
| bindery | (noun) a workshop where books are bound | - |
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| binger | (noun) someone addicted to crack cocaine | Synonyms: crack addict |
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| biodiversity | (noun) the diversity of plant and animal life in a particular habitat (or in the world as a whole) | - |
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| bioengineering | (noun) the branch of engineering science in which biological science is used to study the relation between workers and their environments | Synonyms: biotechnology, ergonomics |
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| biographer | (noun) someone who writes an account of a person's life | - |
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| biosphere | (noun) the regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist | - |
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| bioterrorism | (noun) terrorism using the weapons of biological warfare | Synonyms: biological terrorism |
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| birder | (noun) a person who identifies and studies birds in their natural habitats | Synonyms: bird watcher |
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| birdfeeder | (noun) an outdoor device that supplies food for wild birds | Synonyms: bird feeder, feeder |
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| bister | (noun) a water-soluble brownish-yellow pigment made by boiling wood soot | Synonyms: bistre |
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| bitchery | (noun) aggressive remarks and behavior like that of a spiteful malicious woman | - |
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| biter | (noun) someone who bites | - |
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| bitter | (noun) the property of having a harsh unpleasant taste | Synonyms: bitterness |
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| (noun) the taste experience when quinine or coffee is taken into the mouth | Synonyms: bitterness |
| (noun) English term for a dry sharp-tasting ale with strong flavor of hops (usually on draft) | - |
| bittercress | (noun) any of various herbs of the genus Cardamine, having usually pinnate leaves and racemes of white, pink or purple flowers; cosmopolitan except Antarctic | Synonyms: bitter cress |
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| bittern | (noun) relatively small compact tawny-brown heron with nocturnal habits and a booming cry; found in marshes | - |
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| bitterness | (noun) the property of having a harsh unpleasant taste | Synonyms: bitter |
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| (noun) a rough and bitter manner | Synonyms: acerbity, acrimony, jaundice, tartness, thorniness |
| (noun) the taste experience when quinine or coffee is taken into the mouth | Synonyms: bitter |
| (noun) a feeling of deep and bitter anger and ill-will | Synonyms: gall, rancor, rancour, resentment |
| bitternut | (noun) hickory of the eastern United States having a leaves with 7 or 9 leaflets and thin-shelled very bitter nuts | Synonyms: bitter hickory, bitter pignut, bitternut hickory, Carya cordiformis, swamp hickory |
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| bitterroot | (noun) showy succulent ground-hugging plant of Rocky Mountains regions having deep to pale pink flowers and fleshy farinaceous roots; the Montana state flower | Synonyms: Lewisia rediviva |
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| bitters | (noun) alcoholic liquor flavored with bitter herbs and roots | - |
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| bittersweet | (noun) twining shrub of North America having yellow capsules enclosing scarlet seeds | Synonyms: American bittersweet, Celastrus scandens, climbing bittersweet, false bittersweet, shrubby bittersweet, staff vine, waxwork |
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| (noun) poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North America | Synonyms: bittersweet nightshade, climbing nightshade, deadly nightshade, poisonous nightshade, Solanum dulcamara, woody nightshade |
| bitterweed | (noun) any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma | Synonyms: ambrosia, ragweed |
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| (noun) widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States | Synonyms: bristly oxtongue, bugloss, oxtongue, Picris echioides |
| bitterwood | (noun) handsome South American shrub or small tree having bright scarlet flowers and yielding a valuable fine-grained yellowish wood; yields the bitter drug quassia from its wood and bark | Synonyms: quassia, Quassia amara |
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| (noun) West Indian tree yielding the drug Jamaica quassia | Synonyms: Jamaica quassia, Picrasma excelsa, Picrasma excelsum |
| (noun) medium to large tree of tropical North and South America having odd-pinnate leaves and long panicles of small pale yellow flowers followed by scarlet fruits | Synonyms: paradise tree, Simarouba glauca |
| blabber | (noun) one who reveals confidential information to the police or other authority | Synonyms: betrayer, informer, rat, squealer |
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| blabbermouth | (noun) someone who gossips indiscreetly | Synonyms: talebearer, taleteller, tattler, tattletale, telltale |
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| blackberry | (noun) large sweet black or very dark purple edible aggregate fruit of any of various bushes of the genus Rubus | - |
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| (noun) bramble with sweet edible black or dark purple berries that usually do not separate from the receptacle | Synonyms: blackberry bush |
| blackmailer | (noun) a criminal who extorts money from someone by threatening to expose embarrassing information about them | Synonyms: extortioner, extortionist |
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| blackwater | (noun) any of several human or animal diseases characterized by dark urine resulting from rapid breakdown of red blood cells | - |
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| bladder | (noun) a bag that fills with air | - |
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| (noun) a distensible membranous sac (usually containing liquid or gas) | Synonyms: vesica |
| bladdernose | (noun) medium-sized blackish-grey seal with large inflatable sac on the head; of Arctic and northern Atlantic waters | Synonyms: Cystophora cristata, hooded seal |
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| bladderpod | (noun) any of several hairy North American herbs having yellow racemose flowers and inflated pods | - |
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| (noun) any of several plants of the genus Physaria having racemose yellow flowers and inflated pods | - |
| (noun) annual or perennial herbs with inflated seed pods; some placed in genus Lesquerella | - |
| (noun) North American wild lobelia having small blue flowers and inflated capsules formerly used as an antispasmodic | Synonyms: Indian tobacco, Lobelia inflata |
| bladderwort | (noun) any of numerous aquatic carnivorous plants of the genus Utricularia some of whose leaves are modified as small urn-shaped bladders that trap minute aquatic animals | - |
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| bladderwrack | (noun) a common rockweed used in preparing kelp and as manure | Synonyms: black rockweed, bladder fucus, Fucus vesiculosus, tang |
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| (noun) similar to and found with black rockweed | Synonyms: Ascophyllum nodosum |
| blaeberry | (noun) erect European blueberry having solitary flowers and blue-black berries | Synonyms: bilberry, Viccinium myrtillus, whinberry, whortleberry |
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| blasphemer | (noun) a person who speaks disrespectfully of sacred things | - |
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| blaster | (noun) a workman employed to blast with explosives | Synonyms: chargeman |
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| blastoderm | (noun) a layer of cells on the inside of the blastula | Synonyms: blastodisc, germinal area, germinal disc |
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| blastomere | (noun) any cell resulting from cleavage of a fertilized egg | - |
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| blastosphere | (noun) early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs | Synonyms: blastula |
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| blather | (noun) foolish gibberish | Synonyms: blatherskite |
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| blatherskite | (noun) foolish gibberish | Synonyms: blather |
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| blazer | (noun) lightweight single-breasted jacket; often striped in the colors of a club or school | Synonyms: sport coat, sport jacket, sports coat, sports jacket |
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| bleacher | (noun) a worker who bleaches (cloth or flour etc.) | - |
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| bleachers | (noun) (used in the plural) an outdoor grandstand without a roof; patrons are exposed to the sun as linens are when they are bleached | - |
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| bleeder | (noun) someone who has hemophilia and is subject to uncontrollable bleeding | Synonyms: haemophile, haemophiliac, hemophile, hemophiliac |
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| blender | (noun) an electrically powered mixer with whirling blades that mix or chop or liquefy foods | Synonyms: liquidiser, liquidizer |
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| blether | (noun) idle or foolish and irrelevant talk | Synonyms: chin music, idle talk, prate, prattle |
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| blighter | (noun) a persistently annoying person | Synonyms: cuss, gadfly, pest, pesterer |
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| (noun) a boy or man | Synonyms: bloke, chap, cuss, fella, feller, fellow, gent, lad |
| blinder | (noun) blind consisting of a leather eyepatch sewn to the side of the halter that prevents a horse from seeing something on either side | Synonyms: blinker, winker |
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| blinker | (noun) a light that flashes on and off; used as a signal or to send messages | Synonyms: flasher |
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| (noun) blind consisting of a leather eyepatch sewn to the side of the halter that prevents a horse from seeing something on either side | Synonyms: blinder, winker |
| (noun) a blinking light on a motor vehicle that indicates the direction in which the vehicle is about to turn | Synonyms: trafficator, turn indicator, turn signal |
| blister | (noun) (pathology) an elevation of the skin filled with serous fluid | Synonyms: bleb, bulla |
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| (noun) (botany) a swelling on a plant similar to that on the skin | - |
| (noun) a flaw on a surface resulting when an applied substance does not adhere (as an air bubble in a coat of paint) | - |
| blistering | (noun) the formation of vesicles in or beneath the skin | Synonyms: vesication, vesiculation |
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| bloater | (noun) large fatty herring lightly salted and briefly smoked | - |
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| 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 | - |
| blogger | (noun) a person who keeps and updates a blog | - |
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