Restrain light blow (4)

I believe the answer is:

cuff

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This could be a double definition.

'restrain' is the first definition.
(I know that cuff is a more specific form of the action fetter)

'light blow' is the second definition.
'cuff' can be an answer for 'blow' (I've seen this before). I'm unsure of the 'light' bit.

Can you help me to learn more?

(Other definitions for cuff that I've seen before include "Strike" , "Blow - it's on shirt!" , "Blow; end of sleeve" , "Smack; Moonstone sergeant" , "End part of sleeve" .)

I've seen this clue in The Times.

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