What pacifists have but don't use (5)

I believe the answer is:

fists

I'm a little stuck... Click here to teach me more about this clue!

'but don't use' is the definition.
I can't judge whether this definition defines the answer.

'what pacifists have' is the wordplay.
'FISTS' is hidden within the letters.
But, I am unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for fists that I've seen before include "Boxer's punchers" , "addition to arms?" , "Dukes" , "Doubled up hands" , "bunches of five" .)

I've seen this clue in The Globe and Mail.

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