Poetic Muse (5)
I believe the answer is:
erato
'poetic muse' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for erato that I've seen before include "Muse of lyric love-poetry" , "Source of artistic inspiration" , "One of nine" , "verses she inspired" , "Arts patron" .)