| bittersweet |
a climbing, woody vine found in North America, bearing orange fruit that splits open when ripe to expose red-coated seeds. [5 definitions] |
| bitumen |
any of various natural substances composed chiefly of hydrocarbons, or such substances distilled from petroleum and coal, used for paving and waterproofing. |
| bituminous |
resembling or containing bitumen. |
| bituminous coal |
a mineral coal that yields pitch and tar and has a yellow smoky flame when it burns; soft coal. |
| bivalent |
in chemistry, having a valence of two, or having two valences. [3 definitions] |
| bivalve |
a mollusk with two shells hinged together, such as a mussel, oyster, or clam. [3 definitions] |
| bivouac |
a temporary encampment, esp. military, without protecting shelter. [2 definitions] |
| biweekly |
occurring or appearing every two weeks. [3 definitions] |
| biyearly |
happening every two years or lasting two years; biennial. [2 definitions] |
| bizarre |
strikingly odd or unusual, esp. in appearance or behavior. |
| Bk |
symbol of the chemical element berkelium. |
| blab |
to reveal carelessly or indiscreetly. [4 definitions] |
| blabber |
to talk or say in a wordy, nonsensical, or indiscreet way. [2 definitions] |
| blabbermouth |
(informal) one who talks indiscreetly, esp. one who habitually reveals confidential information. |
| black |
of or pertaining to the color black, the color of the night sky. [13 definitions] |
| black-and-blue |
discolored or covered with discolorations from blood coagulated under the skin; bruised. |
| black and white |
print or writing considered as documentary evidence or binding proof. [2 definitions] |
| black-and-white |
in shades of black and white only, as a photograph or film. [3 definitions] |
| black art |
black magic; sorcery. |
| blackball |
to cast out, as from a group; ostracize. [3 definitions] |
| black bass |
any of several related North American freshwater game fishes. |