A hand-held weapon? (7-6)
I believe the answer is:
knuckle-duster
'a hand-held weapon?' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for knuckle-duster that I've seen before include "Thug's hand-held weapon" , "Hand cover used in fist-fighting" , "Metal weapon worn on fist" , "Fist guard/weapon" , "Metal hand covering used in a violent attack" .)