Graduate has quiet roll (3)
I believe the answer is:
bap
'roll' is the definition.
(I've seen this before)
'graduate has quiet' is the wordplay.
'graduate' becomes 'ba' (**).
'has' says to put letters next to each other.
'quiet' becomes 'p' (music symbol for 'piano').
'ba'+'p'='BAP'
(Other definitions for bap that I've seen before include "Large soft bread roll" , "A soft flat bread roll" , "Big roll" , "Flattish bread roll" , "Large flat round roll" .)