| biceps |
the large muscle at the front of the upper arm that bends the elbow. |
| bicker |
to quarrel about something that does not matter. |
| bicuspid |
a tooth ending in two points. |
| bicycle |
a light vehicle with two wheels, one behind the other, a small seat, and handlebars for steering. Pedals make the wheels move. [2 definitions] |
| bid |
to say to. [4 definitions] |
| biennial |
happening every second year. [5 definitions] |
| big |
large in size, number, or weight. [3 definitions] |
| Big Dipper |
the seven brightest stars of the constellation Ursa Major. These stars form a shape that looks like a ladle, or dipper. |
| bighorn |
a wild sheep found in the Rocky Mountains of North America. The male has large, curved horns; the female has short, straight horns. They are also called Rocky Mountain sheep. |
| big on |
excited about; having a liking for. |
| bike |
(informal) a short form of "bicycle" or "motorcycle." [2 definitions] |
| bile |
a bitter, yellowish liquid made in the liver. Bile helps to digest fats. [2 definitions] |
| bilingual |
able to speak two languages well. [2 definitions] |
| bill1 |
a written list showing the cost of items bought or services provided. [5 definitions] |
| bill2 |
the hard outer part of a bird's mouth that sticks out from its face. A bill is made up of a lower part and an upper part; beak. |
| billboard |
a large board for displaying outdoor advertisements, often seen next to highways. |
| billfold |
a small folding case that holds paper money and fits in a pocket; wallet. |
| billiards |
a game played with long sticks and hard balls on a special table covered with cloth. Players use a stick to hit the balls against each other and into pockets along the edges of the table. |
| billion |
the number that is equal to one thousand times one million; 1,000,000,000. [4 definitions] |
| billow |
a large wave in the ocean; swell. [2 definitions] |
| bin |
a container or space for storing things such as wood, certain foods, or coal. Bins are also used for storing things that will be discarded later. |