Cured ham (6)
I believe the answer is:
gammon
'cured ham' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for gammon that I've seen before include "Cured ham; nonsense" , "Cured meat of hindquarters of a pig" , "Hind portion of a side of bacon" , "Hoax - hock of hog" , "bit of a swine" .)