A fisherman may spin one (4)
I believe the answer is:
tale
'a fisherman may spin one' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tale that I've seen before include "Report" , "Fable" , "'Story, narrative (4)'" , "A story, perhaps out of school" , "Anecdotal narrative" .)