Genuine-sounding angler’s device (4)
I believe the answer is:
reel
'angler's device' is the definition.
(I've seen this in another clue)
'genuine-sounding' is the wordplay.
'genuine' becomes 'real' (associated in meaning).
'sounding' indicates a 'sounds like' (homophone) clue.
'real' is a homophone of 'REEL'.
(Other definitions for reel that I've seen before include "Dance - swim" , "Scottish/Irish dance" , "Whirl around" , "Lurch; spool" , "Dance - sway - cotton holder" .)