| Idiom | Meaning | Example | 
| bolt from the blue | 
(See like a bolt from the blue)
 | 
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| bomb around | 
drive around, drive your car for fun, cruise
 | 
"Where have you been?" "Bombin' around in Rod's car."
 | 
| bomb out | 
fail, not succeed
 | 
Most engineers say the electric car is a failure. It bombed out.
 | 
| bombed | 
drunk, hammered, sloshed to the gills
 | 
Fay was bombed before she got to the party. She was drunk.
 | 
| bone dry | 
very dry, as dry as an old bone
 | 
Someone had drained the pool.    It was bone dry.
 | 
| bone of contention | 
point of disagreement, controversial point
 | 
Job security is the bone of contention in our discussions.
 | 
| bone to pick | 
(See a bone to pick with you)
 | 
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| bone up on | 
study, learn, practise
 | 
I have to bone up on my French if we're going to Paris.
 | 
| bonkers | 
crazy, insane, nuts, wacko
 | 
If you watch professional   wrestling you must be bonkers!
 | 
| bonzer | 
good, fine, super, awesome
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"Did you enjoy your holiday?" "It was bonzer, mate! We had a great time!"
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