Cheese in Greek salads (4)
I believe the answer is:
feta
'cheese in greek salads' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for feta that I've seen before include "Goat's or sheep's milk cheese" , "Salty goat or sheep milk cheese" , "Greek salad cheese" , "Greek sheep or goats' cheese" , "Salty Greek cheese" .)