Partner of cheese (3)
I believe the answer is:
mac
'partner of cheese' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for mac that I've seen before include "Waterproof raincoat, in short" , "laptop?" , "PC" , "It may help you keep dry" , "A Gaelic son, often in name" .)