Slugs ignore rinds of meat (4)
I believe the answer is:
ammo
'slugs' is the definition.
(slug can informally mean bullet)
'ignore rinds of meat' is the wordplay.
'ignore rinds of' says to take the centre (the word\'s rinds or edges are removed).
'meat' becomes 'gammon' (gammon is a kind of meat).
The centre of 'gammon' is 'AMMO'.
(Other definitions for ammo that I've seen before include "Contents of magazine" , "Bullets (abbrev.)" , "explosives, perhaps" , "essential supplies for soldiers" , "Bullets and bombs, etc (abbr)" .)