Crossword Genius

Bar on cricket pitch sometimes jumped by miscreants? (4)

Ross

I believe the answer is:

bail

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'bar' is the definition.
(bar on a cricket wicket)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for bail that I've seen before include "may be jumped" , "Security to guarantee apperance of prisoner" , "Security for release from custody" , "In cricket, wooden cross-piece placed on stumps" , "Partition in stable" .)

I've seen this clue in The Times.
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