Fishing (7)
I believe the answer is:
angling
'fishing' is the definition.
('angle' can be a synonym of 'fish')
This is the entire clue.
(Other definitions for angling that I've seen before include "Fishing with hook and line" , "Fishing with rod and line" , "seeking compliments, perhaps?" , "Pursuit with hook, line and sinker?" , "riverside activity?" .)