Preserve shooting jackets (3)
I believe the answer is:
tin
'preserve' is the definition.
(I know that tin is a more specific form of preserve)
'shooting jackets' is the wordplay.
'jackets' says the answer is hidden in the clue (the clue covers or jackets the answer).
'TIN' is hidden in the letters of 'shooting'.
(Other definitions for tin that I've seen before include "Kind of metal often used as food container" , "Silvery metallic element" , "Silvery white metal" , "Metal element" , "With copper, makes bronze" .)