Crossword Genius

Damage caused by crossbow in refuge? (4-4)

Ross

I believe the answer is:

bolt-hole

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

'refuge?' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for bolt-hole that I've seen before include "Refuge from danger - escape route" , "Place to which one can escape" .)

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