Our dean translated a poem (7)
I believe the answer is:
rondeau
'a poem' is the definition.
(rondeau is a kind of poem)
'our dean translated' is the wordplay.
'translated' indicates anagramming the letters.
'our'+'dean'='ourdean'
'ourdean' is an anagram of 'RONDEAU'.
(Other definitions for rondeau that I've seen before include "Style of poem" , "Short lyrical poem" , "Poem of ten or thirteen lines" , "Musical composition; poem of 13/15 lines" , "form of music" .)