Shoots from cover (6)
I believe the answer is:
snipes
'shoots from cover' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for snipes that I've seen before include "Fires from place of concealment" , "Shoots from a concealed position - at birds of marshy areas?" , "Petty verbal attacks on the wading birds" , "Puts down" .)