It’s close at hand (5)

I believe the answer is:

wrist

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'hand' is the definition.
The definition and answer can be both body parts as well as being singular nouns.
Perhaps there's an association between them I don't understand?

I can't explain the rest of the clue.

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(Other definitions for wrist that I've seen before include "Type of 1 ac" , "Joint (the carpus)" , "Joint between hand and arm" , "Joint at end of arm" , "Human joint" .)

I've seen this clue in the Evening Standard.

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