| Idiom | Meaning | Example |
| booboo |
(See make a booboo)
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| boobs [B] |
breasts, tits
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Okay, she has lovely boobs. What about her personality?
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| boogie |
go, walk, drive
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Let's boogie on down to the store and rent a video.
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| book worm |
one who reads a lot, geek
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Sarah is quite a book worm. She loves to read history books.
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| booked/booked up |
no more space or rooms, no vacancy
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The Royal Hotel is booked up. Every room is reserved.
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| boom box |
portable radio, ghetto blaster
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We can have music at the beach if you bring your boom box.
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| boom or bust |
either large profits or large losses, rich or poor, feast or famine
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In the oil business, it's boom or bust. Some years it's worth more than gold; other years it isn't worth the cost of production!
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| boot it |
drive fast, highball it, pedal to the metal
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If you boot it, Betty won't ride with you. She hates going fast.
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| boot up |
start or switch on a computer
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Wait until I boot up the Mac. Then we can print your letter.
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| bootleg |
produced illegally, not authorized, software piracy
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If someone offers you bootleg software, don't accept it! You could be sued!
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