Spread, say, jam around (5)
I believe the answer is:
marge
'spread' is the definition.
(marge is a kind of spread)
'say jam around' is the wordplay.
'say' becomes 'eg' (both can mean for example).
'jam' becomes 'ram' (synonyms).
'around' shows that the letters should be reversed in order.
'eg'+'ram'='egram'
'egram' reversed gives 'MARGE'.
(Other definitions for marge that I've seen before include "Butter-like spread" , "Homer Simpson's wife; a spread (abbr.)" , "Homer's wife" , "Lover of Homer" , "Butter substitute (abbr)" .)