| blowhole |
a nostril in the top of the head of a whale, dolphin, or porpoise. The blowhole is used to breathe. [3 definitions] |
| blown |
swollen or bloated; inflated. [3 definitions] |
| blow one's top |
(informal) to lose control; become angry. |
| blow over |
to let up; lessen or subside. |
| blowtorch |
a small device that makes a very hot, small flame for melting or cutting metal. |
| blow up |
to destroy or be destroyed through an explosion. [3 definitions] |
| BLT |
a toasted sandwich made with bacon, lettuce, and tomato. |
| blubber |
the layer of fat beneath the skin of whales, seals, and other large sea mammals. [2 definitions] |
| blue |
the color of a clear sky; the color between green and violet on the color spectrum. [3 definitions] |
| blueberry |
a small round berry that is blue in color and can be eaten. [2 definitions] |
| bluebird |
a small, blue North American songbird. Males usually have a reddish breast. |
| bluefish |
a fish that lives in mild Atlantic waters of the North and South American coast. Bluefish are blue and are caught for sport or food. |
| bluegrass |
a grass with a blue-green color that is grown in pastures and on lawns. Kentucky is famous for bluegrass. [2 definitions] |
| blue in the face |
exhausted from too much effort or activity. |
| blue jay |
a common jay bird of eastern North America. A blue jay has a crest on its head and a bright blue upper body with white and black markings on its wings and tail. |
| 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] |