blackrideA student prank in the early 1800s that involved students wearing red coats, blackening their faces, and riding about campus with torches at night on horses stolen from the faculty.
blackriderA small variety of the Arctic char (Salvelinus alpinus)
BlackrockA suburb of Cork, County Cork, Ireland (Irish grid ref W 7271).
BlackrodA small town and civil parish with a town council in the Metropolitan Borough of Bolton, Greater Manchester, England (OS grid ref SD6110).
blackrootgenus Pterocaulon, such as Pterocaulon pycnostachyum (dense-spike blackroot) and Pterocaulon virgatum (wand blackroot)
blacksA kind of ink in used in copperplate printing, prepared from the charred husks of the grape and the residue of the wine press.
BlacksonianThe National Museum of African American History and Culture.
blackspeakThe dialect of English spoken by people of sub-Saharan African ancestry living stateside.
blacksplainOf a black person in a group with non-black people: to explain some concept which is very common in black culture while assuming the non-black members of the group do not understand.
blacktopperA machine that applies a blacktop surface to a road.
BlacktownA suburb and local government area, the City of Blacktown, near Sydney, New South Wales, Australia.
blacktrackerAn Aboriginal person employed by police to track down fugitives or lost people, especially in the bush.
blacktressAn African American woman who is a pioneer of the film industry.
blackulaA vampire belonging to or descended from any of various (African, Aboriginal, etc.) ethnic groups which typically have dark pigmentation of the skin.
BlackvilleA locality in the Liverpool Plains council area, central New South Wales, Australia.
blackvoiceThe adoption by nonblack people of black vocabulary, catchphrases, or speech styles.
blackwoodAfrican blackwood (Dalbergia melanoxylon), of Africa.
BlackwoodianOf or relating to Algernon Blackwood (1869–1951), English writer of ghost stories and weird fiction.
blackworkA form of counted-thread embroidery that is usually stitched on even-weave fabric with a twisted thread.
blackwormAn oligochaete, Lumbriculus variegatus, found in shallow water marshes, ponds, and swamps in North America and Europe, feeding on microorganisms and organic material.
bladdernutAny of several species of large shrubs or small trees, of the genus Staphylea, in the family Staphyleaceae
bladderpodAny of various flowering plants, including Cleome isomeris (= Isomeris arborea), Peritoma arborea, Lobelia inflata, and species of Physaria (= Lesquerella) and Paysonia.
bladderwormA bladderlike larva of a tapeworm, especially the pork tapeworm (species Taenia solium).
bladderwortAny of many aquatic carnivorous plants, of the genus Utricularia, that have open bladders that trap minute insects and crustaceans.
bladderwrackFucus vesiculosus, a seaweed in which iodine was first discovered.