Slice of bacon (6)
I believe the answer is:
rasher
'slice of bacon' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for rasher that I've seen before include "Thin slice of bacon" , "pig, to an extent" , "Slice of meat - more reckless" , "Tasty strip of bacon" , "taking more unnecessary risks?" .)