Crossword Genius

The smallest amount give a high-pitched cry (6)

Ross

I believe the answer is:

squeak

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'high-pitched cry' is the definition.
(I've seen this before)

I don't understand the remainder of the clue.

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(Other definitions for squeak that I've seen before include "(Succeed by) a narrow margin" , "Pip's partner -- quakes (anag)" , "Short high-pitched cry as of bat" , "'High-pitched, screeching noise (6)'" , "Short, high-pitched noise" .)

I've seen this clue in The Telegraph.
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