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bibliography a list of titles about a certain subject. [2 definitions]
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 part of the constellation Ursa Major, made up of this constellation's seven brightest stars. 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. [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]