| 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. |
| black bear |
a North American bear, smaller than a grizzly bear, with thick black or brown fur. [2 definitions] |
| black belt |
the highest rank among practitioners of martial arts such as judo or karate. [3 definitions] |
| blackberry |
a berry, dark purple to black and composed of many large seeds. [2 definitions] |