Crossword Genius

Bird driving another away in scrap (3)

Ross

I believe the answer is:

bit

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'scrap' is the definition.
(synonyms)

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(Other definitions for bit that I've seen before include "Segment" , "The boring-piece of a drill" , "Boring tip of a drill" , "something boring" , "Snaffle - small piece" .)

I've seen this clue in The Times.
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