College meal for fabulous beast (7)
I believe the answer is:
unicorn
'for fabulous beast' is the definition.
(I've seen this before)
'college meal' is the wordplay.
'college' becomes 'uni' (short for university).
'meal' becomes 'corn' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'uni'+'corn'='UNICORN'
Can you help me to learn more?
(Other definitions for unicorn that I've seen before include "Mythical and heraldic beast" , "Mythical one-horned creature" , "Imaginary animal" , "Singularly horny creature of fantasy" , "fabulous thing to behold" .)