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blueprint a print of a drawing that shows a building plan. Blueprints usually have white lines on a blue background. [2 definitions]
blues (used with a plural verb) a state of sadness. [2 definitions]
blue whale a mammal that lives in the ocean. Blue whales are the largest kind of animal that has ever lived. They can grow up to 100 feet long and weigh up to 150 tons. Their large mouths have baleen instead of teeth. Blue whales use baleen to filter lots of very small food such as shrimp from ocean water.
bluff1 a hill or shore with steep sides.
bluff2 to lead other people to believe that the cards in one's hand are better or worse than they really are. Bluffing is a strategy used in the game of poker. [3 definitions]
blunder a silly or careless mistake. [3 definitions]
blunt having a dull edge or point; not sharp. [3 definitions]
blur to cause to run together or become confused. [5 definitions]
blurt to say suddenly and without thought (usually followed by "out").
blush to become red in the face because of shame or embarrassment. [3 definitions]
bluster to blow in a strong and noisy way. [3 definitions]
Blvd. an abbreviation for Boulevard.
boa constrictor a large snake that lives in the tropical areas of Central and South America. Boa constrictors are pale brown with darker marks and are not poisonous. They kill their prey by winding around it and squeezing it until it cannot breathe.
boar a male pig used for breeding. [2 definitions]
board a flat, cut piece of wood; plank. [8 definitions]
boarding school a school at which students live as well as take classes.
boast to talk with too much pride; brag. [3 definitions]
boat a small, open vehicle for traveling on water. [3 definitions]
boathouse a small building or shed built near or partly over the water's edge and used to store boats.
bob1 to make a quick or jerky movement up and down.
bob2 a style of short haircut for women and children. [4 definitions]