Poem don sent in about a university (7)
I believe the answer is:
rondeau
'poem' is the definition.
(I know that rondeau is a type of poem)
'don sent in about a university' is the wordplay.
'sent' indicates an anagram (send can mean to excite or stimulate).
'in' indicates putting letters inside.
'about' becomes 're' ('re' means regarding or about).
'university' becomes 'u' (abbreviation for university).
'don' anagrammed gives 'ond'.
'ond' inserted inside 're' is 'ronde'.
'ronde'+'a'+'u'='RONDEAU'
(Other definitions for rondeau that I've seen before include "Musical composition; poem of 13/15 lines" , "Form of verse by Swinburne" , "form of music" , "Form of poem" , "Type of poem" .)