| bill1 |
a written list showing the cost of items bought or services provided. [4 definitions] |
| bill2 |
the parts of a bird's jaw that form the 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. [4 definitions] |
| 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. |
| biography |
the written story of the facts and events of a person's life. |
| biological |
of or having to do with biology. [2 definitions] |
| biology |
the science that studies the growth and life processes of living things. |
| bioluminescence |
light given off naturally by certain kinds of insects, fish, or bacteria. The bioluminescence of fireflies allows them to blink on and off in the dark. |
| biomass |
the total amount of living things in a particular environment, measured by mass per unit of area or volume. |
| bionic |
an electronic or mechanical device that replaces or helps something natural. An artificial leg is one kind of bionic device. |
| birch |
a tree or shrub with hard wood and smooth bark that can be peeled off. |