Famous fabulist (5)
I believe the answer is:
aesop
'famous fabulist' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for aesop that I've seen before include "fabulous figure?" , "So ape the writer of fables" , "Greek author of fables (c 620-560 BC)" , "Great Greek teller of animal fables" , "Greek fabulist (Tortoise and the Hare)" .)