Folk tale (6)
'folk tale' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for legend that I've seen before include "Roger Federer, for example" , "Caption; very well known" , "Saga" , "Motto" , "Very famous member's death" .)
(Other definitions for myth that I've seen before include "There's no truth in it" , "a false notion" , "A widely held but false belief" , "Ancient story" , "Unfounded belief" .)