Conversed about poetry (5)
I believe the answer is:
verse
'poetry' is the definition.
(lines written in 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 "Section of a poem" , "Stanza; poetry" , "literary offering" , "Poems" , "Metrical text" .)