| blackboard eraser |
an object made of bound layers of felt used for erasing chalk from a blackboard. |
| blackbody |
in physics, a hypothetical body that theoretically absorbs all radiant energy falling on its surface. |
| black book |
a real or imaginary notebook containing names of people, usu. recorded for future censure or punishment. |
| blackbuck |
a long-horned antelope native to India that has a brownish-black back and a white belly. |
| blackcap |
any of several birds with a black crown, such as the chickadee. [2 definitions] |
| blackcock |
the male black grouse. |
| black cohosh |
an eastern North American perennial herb (Cimicifuga racemosa, or Actaea racemosa) of the buttercup family, the rhizome and roots of which are used as an herbal remedy. |
| blackdamp |
a suffocating gas composed of carbon dioxide and nitrogen, found as a residue of fires and explosions of combustible gases in mines; chokedamp. |
| Black Death |
a deadly plague, probably bubonic, that was widespread in Europe in the mid-fourteenth century, characterized by dark splotches on the skin. |
| black duck |
a dark brown pond duck of northeastern North America. [2 definitions] |
| blacken |
to make black; make dark. [3 definitions] |
| black eye |
darkening and discoloration of the flesh around the eye, as from a bruise or blow. [2 definitions] |
| black-eyed pea |
the seed of the cowpea plant, used as food; cowpea. |
| black-eyed Susan |
any of numerous related North American wildflowers with yellow or orange-yellow petals surrounding a dark center. |
| blackface |
theatrical make-up used to burlesque a black character, as in a minstrel show, or an actor playing such a character. [2 definitions] |
| black flag |
see "Jolly Roger." |
| Blackfoot |
a member of an Algonquian Indian tribe formerly resident in Montana, Alberta, and Saskatchewan. [2 definitions] |
| black frost |
severe cold that blackens living plants without the appearance of frost crystals. |
| black grouse |
a large game bird of Europe and Asia, the male of which is black with white markings. |
| blackguard |
an unprincipled, dishonest person; scoundrel. [2 definitions] |
| blackhead |
a small, black-tipped plug of fatty matter blocking a pore of the skin, esp. on the face. [3 definitions] |