Handsome lad of myth (6)
I believe the answer is:
adonis
'handsome lad of myth' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for adonis that I've seen before include "Type of male beauty" , "Hunk" , "extremely handsome chap" , "Beautiful (Greek) man" , "Beautiful Greek youth" .)