Hammer part (4)

I think it could be either:

peen

claw

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

This is the entire clue.

(Other definitions for claw that I've seen before include "Lobster's pincer" , "Hook on the end of toe" , "See 24" , "See 3" , "Sharp curved toe of a bird" .)

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

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