Crossword Genius

What’s exclaimed when striking inmate in conflict (3)

Ross

I believe the answer is:

pow

I believe this is a double definition.

'what's exclaimed when striking' is the first definition.
(onomatopoeic word for the sound of eg a punch)

'inmate in conflict' is the second definition.
(abbreviation for prisoner of war)

I've seen this clue in The Times.
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