| abode | (noun) housing that someone is living in | Synonyms: domicile, dwelling, dwelling house, habitation, home |
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| (noun) any address at which you dwell more than temporarily | Synonyms: residence |
| accommodation | (noun) the act of providing something (lodging or seat or food) to meet a need | - |
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| (noun) (physiology) the automatic adjustment in focal length of the natural lens of the eye | - |
| (noun) living quarters provided for public convenience | - |
| (noun) in the theories of Jean Piaget: the modification of internal representations in order to accommodate a changing knowledge of reality | - |
| (noun) a settlement of differences | - |
| (noun) making or becoming suitable; adjusting to circumstances | Synonyms: adjustment, fitting |
| accommodator | (noun) someone who performs a service or does a favor | Synonyms: obliger |
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| acrodont | (noun) an animal having teeth consolidated with the summit of the alveolar ridge without sockets | - |
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| actinopod | (noun) protozoa having stiff rodlike radiating pseudopods | - |
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| adulthood | (noun) the state (and responsibilities) of a person who has attained maturity | - |
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| (noun) the period of time in your life after your physical growth has stopped and you are fully developed | Synonyms: maturity |
| aerodontalgia | (noun) pain in the teeth that results from a change in air pressure (as in flying or mountain climbing) | - |
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| aerodrome | (noun) an airfield equipped with control tower and hangars as well as accommodations for passengers and cargo | Synonyms: airdrome, airport, drome |
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| aerodynamics | (noun) the branch of mechanics that deals with the motion of gases (especially air) and their effects on bodies in the flow | Synonyms: aeromechanics |
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| allgood | (noun) European plant naturalized in North America; often collected from the wild as a potherb | Synonyms: Chenopodium bonus-henricus, fat hen, good-king-henry, wild spinach |
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| alloantibody | (noun) an antibody that occurs naturally against foreign tissues from a person of the same species | Synonyms: isoantibody |
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| amiodarone | (noun) an antiarrhythmic drug (trade name Cordarone) that has potentially fatal side effects and is used to control serious heart rhythm problems only when safer agents have been ineffective | Synonyms: Cordarone |
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| amphipod | (noun) a kind of malacostracan crustacean | - |
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| anaphrodisia | (noun) decline or absence of sexual desire | - |
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| anode | (noun) a positively charged electrode by which electrons leave an electrical device | - |
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| (noun) the negatively charged terminal of a voltaic cell or storage battery that supplies current | - |
| anodyne | (noun) a medicine used to relieve pain | Synonyms: analgesic, pain pill, painkiller |
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| antibody | (noun) any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response | - |
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| antinode | (noun) (physics) the point of maximum displacement in a periodic system | - |
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| antipodal | (noun) the relation of opposition along a diameter | Synonyms: antipodal opposition, diametrical opposition |
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| antipode | (noun) direct opposite | - |
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| antipodes | (noun) any two places or regions on diametrically opposite sides of the Earth | - |
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| antispasmodic | (noun) a drug used to relieve or prevent spasms (especially of the smooth muscles) | Synonyms: antispasmodic agent, spasmolytic |
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| aphrodisia | (noun) a desire for heterosexual intimacy | - |
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| aphrodisiac | (noun) a drug or other agent that stimulates sexual desire | - |
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| apodeme | (noun) ridge-like ingrowth of the exoskeleton of an arthropod that supports internal organs and provides attachment points for muscles | - |
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| applewood | (noun) wood of any of various apple trees of the genus Malus | - |
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| argyrodite | (noun) a rare steel-grey mineral consisting of silver and germanium and sulfur | - |
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| arthrodesis | (noun) the surgical fixation of a joint which is intended to result in bone fusion | - |
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| arthropod | (noun) invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin | - |
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| artiodactyl | (noun) placental mammal having hooves with an even number of functional toes on each foot | Synonyms: artiodactyl mammal, even-toed ungulate |
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| asphodel | (noun) any of various chiefly Mediterranean plants of the genera Asphodeline and Asphodelus having linear leaves and racemes of white or pink or yellow flowers | - |
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| astrodome | (noun) a transparent dome on top of an airplane where the navigator can make celestial observations | - |
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| astrodynamics | (noun) the branch of astronomy that studies the motion of natural and artificial bodies in space | - |
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| atherodyde | (noun) a simple type of jet engine; must be launched at high speed | Synonyms: athodyd, flying drainpipe, ramjet, ramjet engine |
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| athodyd | (noun) a simple type of jet engine; must be launched at high speed | Synonyms: atherodyde, flying drainpipe, ramjet, ramjet engine |
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| autoantibody | (noun) an antibody acting against tissues of the organism that produces it | - |
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| autodidact | (noun) a person who has taught himself | - |
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| babyhood | (noun) the earliest state of immaturity | Synonyms: infancy |
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| (noun) the early stage of growth or development | Synonyms: early childhood, infancy |
| bachelorhood | (noun) the state of being an unmarried man | - |
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| (noun) the time of a man's life prior to marriage | - |
| backwoods | (noun) a remote and undeveloped area | Synonyms: back country, boondocks, hinterland |
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| backwoodsman | (noun) a man who lives on the frontier | Synonyms: frontiersman, mountain man |
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| basswood | (noun) any of various deciduous trees of the genus Tilia with heart-shaped leaves and drooping cymose clusters of yellowish often fragrant flowers; several yield valuable timber | Synonyms: lime, lime tree, linden, linden tree |
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| (noun) soft light-colored wood of any of various linden trees; used in making crates and boxes and in carving and millwork | Synonyms: linden |
| bearwood | (noun) shrubby tree of the Pacific coast of the United States; yields cascara sagrada | Synonyms: bearberry, cascara buckthorn, chittamwood, chittimwood, Rhamnus purshianus |
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| beechwood | (noun) wood of any of various beech trees; used for flooring and containers and plywood and tool handles | Synonyms: beech |
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| beefwood | (noun) a tropical hardwood tree yielding balata gum and heavy red timber | Synonyms: balata, balata tree, bully tree, Manilkara bidentata |
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| (noun) any of several Australian trees of the genus Casuarina yielding heavy hard red wood used in cabinetwork | - |
| (noun) tree yielding hard heavy reddish wood | Synonyms: Grevillea striata |
| (noun) tree or tall shrub with shiny leaves and umbels of fragrant creamy-white flowers; yields hard heavy reddish wood | Synonyms: scrub beefwood, Stenocarpus salignus |
| (noun) any of several heavy hard reddish chiefly tropical woods of the families Casuarinaceae and Proteaceae; some used for cabinetwork | - |
| bentwood | (noun) wood that is steamed until it becomes pliable and then is shaped for use in making furniture | - |
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| benzodiazepine | (noun) any of several similar lipophilic amines used as tranquilizers or sedatives or hypnotics or muscle relaxants; chronic use can lead to dependency | - |
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| biodefence | (noun) procedures involved in taking defensive measures against attacks using biological agents | Synonyms: biodefense, biological defence, biological defense |
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| biodefense | (noun) procedures involved in taking defensive measures against attacks using biological agents | Synonyms: biodefence, biological defence, biological defense |
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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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| biodynamics | (noun) the branch of biology dealing with energy or the activity of living organisms. | - |
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| 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 |
| blackbody | (noun) a hypothetical object capable of absorbing all the electromagnetic radiation falling on it | Synonyms: black body, full radiator |
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| blackwood | (noun) any of several hardwood trees yielding very dark-colored wood | Synonyms: blackwood tree |
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| (noun) very dark wood of any of several blackwood trees | - |
| 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 |
| blastoderm | (noun) a layer of cells on the inside of the blastula | Synonyms: blastodisc, germinal area, germinal disc |
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| blastodisc | (noun) a layer of cells on the inside of the blastula | Synonyms: blastoderm, germinal area, germinal disc |
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| blood | (noun) temperament or disposition | - |
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| (noun) the fluid (red in vertebrates) that is pumped through the body by the heart and contains plasma, blood cells, and platelets | - |
| (noun) the hereditary derivation of an individual | Synonyms: ancestry, blood line, bloodline, descent, line, line of descent, lineage, origin, parentage, pedigree, stemma, stock |
| (noun) people viewed as members of a group | - |
| (noun) a dissolute man in fashionable society | Synonyms: profligate, rake, rakehell, rip, roue |
| bloodbath | (noun) indiscriminate slaughter | Synonyms: battue, bloodletting, bloodshed |
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| bloodberry | (noun) bushy houseplant having white to pale pink flowers followed by racemes of scarlet berries; tropical Americas | Synonyms: blood berry, Rivina humilis, rouge plant, rougeberry |
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| bloodguilt | (noun) the state of being guilty of bloodshed and murder | - |
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| bloodhound | (noun) a breed of large powerful hound of European origin having very acute smell and used in tracking | Synonyms: sleuthhound |
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| bloodiness | (noun) a disposition to shed blood | Synonyms: bloodthirstiness |
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| (noun) the state of being bloody | - |
| bloodleaf | (noun) any plant of the genus Iresine having colored foliage | - |
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| bloodletting | (noun) formerly used as a treatment to reduce excess blood (one of the four humors of medieval medicine) | - |
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| (noun) indiscriminate slaughter | Synonyms: battue, bloodbath, bloodshed |
| bloodline | (noun) ancestry of a purebred animal | Synonyms: pedigree |
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| (noun) the hereditary derivation of an individual | Synonyms: ancestry, blood, blood line, descent, line, line of descent, lineage, origin, parentage, pedigree, stemma, stock |
| bloodlust | (noun) a desire for bloodshed | - |
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| bloodmobile | (noun) a motor vehicle equipped to collect blood donations | - |
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| bloodroot | (noun) perennial woodland native of North America having a red root and red sap and bearing a solitary lobed leaf and white flower in early spring and having acrid emetic properties; rootstock used as a stimulant and expectorant | Synonyms: puccoon, redroot, Sanguinaria canadensis, tetterwort |
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| bloodshed | (noun) indiscriminate slaughter | Synonyms: battue, bloodbath, bloodletting |
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| (noun) the shedding of blood resulting in murder | Synonyms: gore |
| bloodstain | (noun) a discoloration caused by blood | - |
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| bloodstock | (noun) thoroughbred horses (collectively) | - |
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| bloodstone | (noun) green chalcedony with red spots that resemble blood | Synonyms: heliotrope |
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| bloodstream | (noun) the blood flowing through the circulatory system | Synonyms: blood stream |
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| bloodsucker | (noun) carnivorous or bloodsucking aquatic or terrestrial worms typically having a sucker at each end | Synonyms: hirudinean, leech |
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| bloodthirstiness | (noun) a disposition to shed blood | Synonyms: bloodiness |
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| bloodworm | (noun) a segmented marine worm with bright red body; often used for bait | - |
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| bloodwort | (noun) any of various plants of the family Haemodoraceae; roots contain a deep red coloring matter | - |
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| bod | (noun) alternative names for the body of a human being | Synonyms: anatomy, build, chassis, figure, flesh, form, frame, human body, material body, physical body, physique, shape, soma |
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| bodega | (noun) a small Hispanic shop selling wine and groceries | - |
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| bodice | (noun) part of a dress above the waist | - |
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| boding | (noun) a feeling of evil to come | Synonyms: foreboding, premonition, presentiment |
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| bodkin | (noun) a blunt needle for threading ribbon through loops | Synonyms: threader |
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| (noun) a small sharp-pointed tool for punching holes in leather or fabric | - |
| (noun) formerly a long hairpin; usually with an ornamental head | - |
| (noun) a dagger with a slender blade | Synonyms: poniard |
| body | (noun) the external structure of a vehicle | - |
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| (noun) a resonating chamber in a musical instrument (as the body of a violin) | Synonyms: soundbox |
| (noun) the property of holding together and retaining its shape | Synonyms: consistence, consistency, substance |
| (noun) the main mass of a thing | - |
| (noun) the entire physical structure of an organism (an animal, plant, or human being) | Synonyms: organic structure |
| (noun) the body excluding the head and neck and limbs | Synonyms: torso, trunk |
| (noun) a natural object consisting of a dead animal or person | Synonyms: dead body |
| (noun) the central message of a communication | - |
| (noun) a group of persons associated by some common tie or occupation and regarded as an entity | - |
| (noun) a collection of particulars considered as a system | - |
| (noun) an individual 3-dimensional object that has mass and that is distinguishable from other objects | - |
| bodybuilder | (noun) someone who does special exercises to develop a brawny musculature | Synonyms: muscle-builder, muscle builder, musclebuilder, muscleman |
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| bodybuilding | (noun) exercise that builds muscles through tension | Synonyms: anaerobic exercise, muscle building, musclebuilding |
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| bodyguard | (noun) a group of men who escort and protect some important person | - |
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| (noun) someone who escorts and protects a prominent person | Synonyms: escort |
| bodywork | (noun) the work of making or repairing vehicle bodies | - |
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| (noun) the exterior body of a motor vehicle | - |
| boodle | (noun) a gambling card game in which chips are placed on the ace and king and queen and jack of separate suits (taken from a separate deck); a player plays the lowest card of a suit in his hand and successively higher cards are played until the sequence stops; the player who plays a card matching one in the layout wins all the chips on that card | Synonyms: Chicago, Michigan, Newmarket, stops |
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| (noun) informal terms for money | Synonyms: bread, cabbage, clams, dinero, dough, gelt, kale, lettuce, lolly, loot, lucre, moolah, pelf, scratch, shekels, simoleons, sugar, wampum |
| boxwood | (noun) evergreen shrubs or small trees | Synonyms: box |
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| (noun) very hard tough close-grained light yellow wood of the box (particularly the common box); used in delicate woodwork: musical instruments and inlays and engraving blocks | Synonyms: Turkish boxwood |
| boyhood | (noun) the childhood of a boy | - |
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| brachiopod | (noun) marine animal with bivalve shell having a pair of arms bearing tentacles for capturing food; found worldwide | Synonyms: lamp shell, lampshell |
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| branchiopod | (noun) aquatic crustaceans typically having a carapace and many pairs of leaflike appendages used for swimming as well as respiration and feeding | Synonyms: branchiopod crustacean, branchiopodan |
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| branchiopodan | (noun) aquatic crustaceans typically having a carapace and many pairs of leaflike appendages used for swimming as well as respiration and feeding | Synonyms: branchiopod, branchiopod crustacean |
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| brazilwood | (noun) tropical tree with prickly trunk; its heavy red wood yields a red dye and is used for cabinetry | Synonyms: Caesalpinia echinata, peach-wood, peachwood, pernambuco wood |
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| (noun) heavy wood of various brazilwood trees; used for violin bows and as dyewoods | - |
| briarwood | (noun) wood from the hard woody root of the briar Erica arborea; used to make tobacco pipes | Synonyms: brier-wood, brierwood |
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| brierwood | (noun) wood from the hard woody root of the briar Erica arborea; used to make tobacco pipes | Synonyms: briarwood, brier-wood |
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| brodiaea | (noun) any of several plants of the genus Brodiaea having basal grasslike leaves and globose flower heads on leafless stems resembling those of genus Allium | - |
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| bronchodilator | (noun) a drug that relaxes and dilates the bronchial passageways and improves the passages of air into the lungs | - |
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| brood | (noun) the young of an animal cared for at one time | - |
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