Crossword Genius

Hammer part (4)

Ross

I think it could be either:

peen

claw

'hammer part' is the definition.
(I've seen this in another clue)

This is all the clue.

I've seen this clue in the Newsday, the USA Today, The Independent, the King Feature Syndicate, the Penny Press, the LA Times, The New York Times, The Washington Post and the Universal.
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