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Glossary · Nouns · B

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TermTypeDefinitionClassificationsUpdated
Black WattlenounMWEAustralian tree that yields tanning materialsverifiedMay 18, 2026
Black WeevilnounMWEbrown weevil that infests stored grain especially riceverifiedMay 18, 2026
Black WhalenounMWElarge whale with a large cavity in the head containing spermaceti and oilverifiedMay 18, 2026
Black WidownounMWEvenomous New World spiderverifiedMay 18, 2026
Black WillownounMWENorth American shrubby willow having dark bark and linear leaves growing close to streams and lakesverifiedMay 18, 2026
Black-And-Tan CoonhoundnounMWEAmerican breed of large powerful hound dogs used for hunting raccoons and other gameverifiedMay 18, 2026
Black-And-Tan TerriernounMWEa breed of short-haired rat terrier with a black-and-tan coat that was developed in Manchester, EnglandverifiedMay 18, 2026
Black-Backed GullnounMWEwhite gull having a black back and wingsverifiedMay 18, 2026
Black-Billed CuckoonounMWENorth American cuckooverifiedMay 18, 2026
Black-Body RadiationnounMWEthe electromagnetic radiation that would be radiated from an ideal black bodyverifiedMay 18, 2026
Black-Capped ChickadeenounMWEchickadee having a dark crownverifiedMay 18, 2026
Black-Crowned Night HeronnounMWEnight heron of both Old and New WorldsverifiedMay 18, 2026
Black-Eyed PeanounMWEsprawling Old World annual cultivated especially in southern United States for food and forage and green manureverifiedMay 18, 2026
Black-Eyed SusannounMWEtropical African climbing plant having yellow flowers with a dark purple centerverifiedMay 18, 2026
Black-Eyed Susan VinenounMWEtropical African climbing plant having yellow flowers with a dark purple centerverifiedMay 18, 2026
Black-Footed AlbatrossnounMWEa variety of albatross with black feetverifiedMay 18, 2026
Black-Fronted Bush ShrikenounMWEa kind of bush shrikeverifiedMay 18, 2026
Black-Headed SnakenounMWEsmall secretive ground-living snakeverifiedMay 18, 2026
Black-Legged TicknounMWEparasitic on mice of genus Peromyscus and bites humansverifiedMay 18, 2026
Black-Necked CobranounMWEaggressive cobra widely distributed in AfricaverifiedMay 18, 2026
Black-Necked GrebenounMWEsmall grebe with yellow ear tufts and a black neckverifiedMay 18, 2026
Black-Necked StiltnounMWEstilt of southwestern United States to northern South America having black plumage extending from the head down the back of the neckverifiedMay 18, 2026
Black-Necked StorknounMWElarge mostly white Australian storkverifiedMay 18, 2026
Black-Stem SpleenwortnounMWEfern of tropical America: from southern United States to West Indies and Mexico to BrazilverifiedMay 18, 2026
Black-Stemmed SpleenwortnounMWEfern of tropical America: from southern United States to West Indies and Mexico to BrazilverifiedMay 18, 2026
Black-Tailed DeernounMWEmule deer of western Rocky MountainsverifiedMay 18, 2026
Black-Winged StiltnounMWEstilt of Europe and Africa and Asia having mostly white plumage but with black wingsverifiedMay 18, 2026
Blackamoornouna person with dark skin who comes from Africa (or whose ancestors came from Africa)verifiedMay 18, 2026
Blackback FloundernounMWEimportant American food fish in the winterverifiedMay 18, 2026
Blackbeetlenoundark brown cockroach originally from orient now nearly cosmopolitan in distributionverifiedMay 18, 2026
Blackberry BushnounMWEbramble with sweet edible black or dark purple berries that usually do not separate from the receptacleverifiedMay 18, 2026
Blackberry-Lilynoungarden plant whose capsule discloses when ripe a mass of seeds resembling a blackberryverifiedMay 18, 2026
Blackbirdnounany bird of the family Icteridae whose male is black or predominantly blackverifiedMay 18, 2026
Blackboardnounsheet of slateverifiedMay 18, 2026
Blackboard ErasernounMWEan eraser that removes chalk marks from blackboardverifiedMay 18, 2026
Blackbucknouncommon Indian antelope with a dark back and spiral hornsverifiedMay 18, 2026
Blackcapnounraspberry native to eastern North America having black thimble-shaped fruitverifiedMay 18, 2026
Blackcap RaspberrynounMWEraspberry native to eastern North America having black thimble-shaped fruitverifiedMay 18, 2026
Blackcocknounmale black grouseverifiedMay 18, 2026
Blackdampnounthe atmosphere in a mine following an explosionverifiedMay 18, 2026
Blackeningnounchanging to a darker colorverifiedMay 18, 2026
Blackfacenounthe makeup (usually burnt cork) used by a performer in order to imitate a NegroverifiedMay 18, 2026
Blackfishnounsmall dark-colored whale of the Atlantic coast of the United StatesverifiedMay 18, 2026
Blackflynounsmall blackish stout-bodied biting fly having aquatic larvaeverifiedMay 18, 2026
Blackfoot DaisynounMWEbushy subshrub having flower heads that resemble asters with broad white raysverifiedMay 18, 2026
Blackheadnouna black-tipped plug clogging a pore of the skinverifiedMay 18, 2026
Blackheartnounany of various diseases in which the central tissues blackenverifiedMay 18, 2026
Blackheart CherrynounMWEheart cherry with dark flesh and skin cherryverifiedMay 18, 2026
Blackingnouna substance used to produce a shiny protective surface on footwearverifiedMay 18, 2026
Blackjack OaknounMWEa common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leavesverifiedMay 18, 2026
blacklistnounA list of discrete entities, such as hosts or applications, that have been previously determined to be associated with malicious activity.ControlMay 12, 2026
BlacklistingnounThe process of the system invalidating a user ID based on the user’s inappropriate actions. A blacklisted user ID cannot be used to log on to the system, even with the correct authenticator. Blacklisting and lifting of a blacklisting are both security-relevant events. Blacklisting also applies to blocks placed against IP addresses to prevent inappropriate or unauthorized use of Internet resources.ProcessRegulatedMay 9, 2026
Blackmailernouna criminal who extorts money from someone by threatening to expose embarrassing information about themverifiedMay 18, 2026
Blackmouth BassnounMWEsmall marine fish with black mouth and gill cavityverifiedMay 18, 2026
Blacknessnounthe quality or state of the achromatic color of least lightness (bearing the least resemblance to white)verifiedMay 18, 2026
BlackpollnounNorth American warbler having a black-and-white headverifiedMay 18, 2026
Blackseednoungrass native to West Indies but common in southern United States having tufted wiry stems often infested with a dark fungusverifiedMay 18, 2026
Blacksmithnouna smith who forges and shapes iron with a hammer and anvilverifiedMay 18, 2026
Blacksnakenounblackish racer of the eastern United States that grows to six feetverifiedMay 18, 2026
Blacktailnounmule deer of western Rocky MountainsverifiedMay 18, 2026
Blacktail DeernounMWEmule deer of western Rocky MountainsverifiedMay 18, 2026
Blacktail JackrabbitnounMWEthe common jackrabbit of grasslands and open areas of western United StatesverifiedMay 18, 2026
Blacktail Prairie DognounMWEtail is black tippedverifiedMay 18, 2026
Blackthornnounerect and almost thornless American hawthorn with somewhat pear-shaped berriesverifiedMay 18, 2026
Blacktip SharknounMWEwidely distributed shallow-water shark with fins seemingly dipped in inkverifiedMay 18, 2026
Blacktoppingnouna black bituminous material used for paving roads or other areasverifiedMay 18, 2026
Blackwaternounany of several human or animal diseases characterized by dark urine resulting from rapid breakdown of red blood cellsverifiedMay 18, 2026
Blackwater FevernounMWEsevere and often fatal malaria characterized by kidney damage resulting in dark urineverifiedMay 18, 2026
Blackwoodnounany of several hardwood trees yielding very dark-colored woodverifiedMay 18, 2026
Blackwood TreenounMWEany of several hardwood trees yielding very dark-colored woodverifiedMay 18, 2026
Bladdernouna distensible membranous sac (usually containing liquid or gas)verifiedMay 18, 2026
Bladder CampionnounMWEbluish-green herb having sticky stems and clusters of large evening-opening white flowers with much-inflated calyxverifiedMay 18, 2026
Bladder CherrynounMWEOld World perennial cultivated for its ornamental inflated papery orange-red calyxverifiedMay 18, 2026
Bladder FernnounMWEany fern of the genus Cystopteris characterized by a hooded indusium or bladderlike membrane covering the soriverifiedMay 18, 2026
Bladder FucusnounMWEa common rockweed used in preparing kelp and as manureverifiedMay 18, 2026
Bladder KetmianounMWEannual weedy herb with ephemeral yellow purple-eyed flowersverifiedMay 18, 2026
Bladder SennanounMWEyellow-flowered European shrub cultivated for its succession of yellow flowers and very inflated bladdery pods and as a source of wildlife foodverifiedMay 18, 2026
Bladder SphincternounMWEthe sphincter muscle of the urinary bladderverifiedMay 18, 2026
Bladder StonenounMWEa calculus formed in the bladderverifiedMay 18, 2026
Bladder WormnounMWEencysted saclike larva of the tapewormverifiedMay 18, 2026
Bladdernosenounmedium-sized blackish-grey seal with large inflatable sac on the headverifiedMay 18, 2026
Bladdernut FamilynounMWEa family of dicotyledonous plants of order Sapindales found mostly in the north temperate zoneverifiedMay 18, 2026
BladderpodnounNorth American wild lobelia having small blue flowers and inflated capsules formerly used as an antispasmodicverifiedMay 18, 2026
Bladderwortnounany of numerous aquatic carnivorous plants of the genus Utricularia some of whose leaves are modified as small urn-shaped bladders that trap minute aquatic animalsverifiedMay 18, 2026
Bladderwort FamilynounMWEcarnivorous aquatic or bog plants: genera Utricularia, Pinguicula, and GenliseaverifiedMay 18, 2026
Bladderwracknouna common rockweed used in preparing kelp and as manureverifiedMay 18, 2026
Bladenouna cutting or thrusting weapon that has a long metal blade and a hilt with a hand guardverifiedMay 18, 2026
Blade ApplenounMWEsmall yellow to orange fruit of the Barbados gooseberry cactus used in desserts and preserves and jelliesverifiedMay 18, 2026
Blade BitnounMWEa drilling bit with cutting edges usually hardened against wearverifiedMay 18, 2026
Blade RoastnounMWEa roast cut from the bladeverifiedMay 18, 2026
Blaeberrynounerect European blueberry having solitary flowers and blue-black berriesverifiedMay 18, 2026
Blahnounpompous or pretentious talk or writingverifiedMay 18, 2026
Blainnounan inflammatory swelling or soreverifiedMay 18, 2026
Blame GamenounMWEaccusations exchanged among people who refuse to accept sole responsibility for some undesirable eventverifiedMay 18, 2026
Blamelessnessnouna state of innocenceverifiedMay 18, 2026
Blameworthinessnouna state of guiltverifiedMay 18, 2026
Blancnouna white sauce of fat, broth, and vegetables, used especially with braised meatverifiedMay 18, 2026
Blanc FixenounMWEa white insoluble radiopaque powder used as a pigmentverifiedMay 18, 2026
Blanching AgentnounMWEan agent that makes things white or colorlessverifiedMay 18, 2026
Blancmangenounsweet almond-flavored milk pudding thickened with gelatin or cornstarchverifiedMay 18, 2026