Destroys town with axes (5)

I believe the answer is:

sacks

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

'axes' is the definition.
(I've seen this in another clue)

I don't understand the rest of the clue.

(Other definitions for sacks that I've seen before include "Bags; wines" , "Large strong bags" , "Plunders; bags" , "Plunders; fires" , "Discharges" .)

I've seen this clue in The Sun.

Want a hint initially instead of a full solution? Install my app