| Idiom | Meaning | Example | 
| bitten by the same bug | 
have the same interest or hobby
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My cousin and I were bitten by the same bug. We collect coins.
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| bitter end | 
(See the bitter end)
 | 
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| bitter pill | 
(See a bitter pill)
 | 
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| blab | 
tell everybody, tell secrets
 | 
I told you I like Kevin, and you blabbed it to everybody.
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| blabbermouth | 
a person who tells everything, loud mouth
 | 
Sharon - that blabbermouth! She told the whole class I love Bill.
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| black eye | 
an eye injury that causes the skin to turn black
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"How'd you get the black eye?" "Fighting - in a hockey game."
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| Black Friday | 
the day the stock market crashed (failed) in 1929
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In the 1980s, there were days to remind us of Black Friday.
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| black-listed | 
excluded, not be invited, not allowed to join
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Gore was black-listed because he led the demonstration.
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| black mark | 
(See a black mark)
 | 
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| black out | 
become unconscious, faint, pass out
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If I bend over for a long time, I nearly black out when I stand up.
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