Hitting with can (3)
I believe the answer is:
tin
'can' is the definition.
(both are metal containers)
'hitting with' is the wordplay.
'with' says the answer is hidden in the clue.
'TIN' can be found hidden inside 'hitting'.
(Other definitions for tin that I've seen before include "roofing material" , "Kind of metal often used as food container" , "Silvery-white metal used in cans" , "With copper, makes bronze" , "1 down, symbol Sn" .)