Conversed about poesy (5)
I believe the answer is:
verse
'poesy' is the definition.
(I know that poesy can be written as verse)
'conversed about' is the wordplay.
'about' indicates a hidden word (the clue goes around or about the answer).
'VERSE' can be found hidden inside 'conversed'.
(Other definitions for verse that I've seen before include "literary offering" , "Part of hymn" , "few lines of writing?" , "Poems" , "Piece of poetry" .)