College poem: it contains everything (8)
I believe the answer is:
universe
'it contains everything' is the definition.
'college poem' is the wordplay.
'college' becomes 'uni' (I've seen this in other clues).
'poem' becomes 'verse' (verse is a kind of poem).
'uni'+'verse'='UNIVERSE'
(Other definitions for universe that I've seen before include "Everything that exists anywhere" , "The earth and all the heavenly bodies" , "mind-boggling concept" , "Cosmos" , "Everything that exists, everywhere" .)