Poetic verse (6)
I believe the answer is:
stanza
'poetic verse' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for stanza that I've seen before include "Group of lines in a poem, play, etc" , "Group of lines of verse" , "Lines forming a unit of verse" , "Verse of poem" , "Chunk of poetry" .)