The head's spread (4)
I believe the answer is:
pate
This clue is a double definition.
'the head's' is the first definition.
(thesaurus)
'spread' is the second definition.
(pate is a kind of spread)
(Other definitions for pate that I've seen before include "Meat paste, maybe de fois gras" , "Tape for a head" , "chef's item" , "food" , "Savoury spread" .)