Maybe Poe's a past expert at telling fabulous tales (5)
I believe the answer is:
aesop
'past expert at telling fabulous tales' is the definition.
I can't judge whether this defines the answer.
'maybe poe's a' is the wordplay.
'maybe' indicates anagramming the letters.
'poes'+'a'='poesa'
'poesa' anagrammed gives 'AESOP'.
Can you help me to learn more?
(Other definitions for aesop that I've seen before include "Classic fable writer" , "Fabulous man" , "Greek storyteller" , "he wrote in Greek" , "Ancient Greek author of moral tales" .)