Pieces of Cambridge college (6)
I believe the answer is:
queens
I believe this clue is a double definition.
'pieces' is the first definition.
(I know this)
'cambridge college' is the second definition.
'of' is the link.
(Other definitions for queens that I've seen before include "[COLLEGE] < Tennis club" , "Belfast university" , "Most powerful pieces in chess games" , "Brooklyn's neighbour" , "Female monarchs" .)