| black hole |
a hypothetical region or body in space, possibly the remnants of a collapsed star, with such a strong gravitational pull that neither light nor matter can escape. |
| blacking |
a substance that is applied to an object to make it black. |
| blackjack |
a short club with a leather cover, heavy head, and flexible handle, used as a weapon. [6 definitions] |
| black light |
ultraviolet or infrared radiation that is invisible but indirectly detectable, as by fluorescence. |
| blacklist |
a list of persons or groups that are under suspicion, censure, or investigation, as by government, employers, or the like. [2 definitions] |
| black lung |
a lung disease, esp. of miners, that is caused by long-term exposure to coal dust. |
| blackly |
with malicious or angry looks or intentions. [2 definitions] |
| black magic |
magic accomplished with evil intent or by satanic means; sorcery; witchcraft. |
| blackmail |
payment forced by threats to reveal damaging information; extortion. [3 definitions] |
| black margate |
a grunt of the tropical western Atlantic. |
| black mark |
something unfavorable or detrimental in one's record. |
| black market |
the illegal purchase or sale of goods in violation of restrictions such as price controls or rationing, customs laws, or the like. [2 definitions] |
| black-market |
to buy or sell on the black market. |
| black marketeer |
one who buys or sells in the black market. |
| Black Muslim |
a member of the Nation of Islam. |
| black nationalism |
(often caps.) a U.S. movement that advocates the establishment of a separate black nation. |
| blackout |
the extinguishing or hiding of all the lights of a city or region, as in a power failure or air raid. [4 definitions] |
| black out |
to lose consciousness; faint. |
| black pepper |
a spice made by grinding the whole dried berry of the pepper plant. |
| black power |
(sometimes caps.) the political and economic power of American blacks mobilized to force the granting of equal rights. |
| black raspberry |
a prickly shrub that grows in eastern North America and bears a dark purple berry. [2 definitions] |