| 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. |
| binary |
having two parts or components. [2 definitions] |
| binary system |
a numbering system with a base of two. In binary numbers, any number can be expressed by 1, 0, or a combination of these. The number five is written as "101" in the binary system. |
| bind |
to tie together or fasten tightly with a rope or cord. [5 definitions] |
| binder |
a large, sturdy notebook cover that contains a device for holding loose papers. |
| bingo |
a game in which players try to match numbers on a card with numbers read out by a caller. Each player has a card with numbered squares. The player who is the first to cover a whole row of squares is the winner. |
| binocular |
(usually plural) a device that uses lenses and mirrors to make objects look larger. Binoculars are used with both eyes at once. |
| biodegradable |
able to be broken down by the action of living organisms such as bacteria. |
| biodiverse |
of an area or region, having many different kinds of plants and animals. |
| biodiversity |
the condition of having a wide variety of living things. If an area on the earth has biodiversity, it means that there are many different kinds of animals and plants living there. |
| biography |
the written story of the facts and events of a person's life. |