Fisherman (6)
I believe the answer is:
angler
'fisherman' is the definition.
(angler is a kind of fisherman)
This is all the clue.
(Other definitions for angler that I've seen before include "One proverbially exaggerating" , "person hoping to catch fish" , "I cast Rod" , "Walton's was Compleat" , "A rod and line fisherman" .)