Hearsay about listener (3)
I believe the answer is:
ear
'listener' is the definition.
(body part which hears or listens)
'hearsay about' is the wordplay.
'about' says the answer is hidden in the clue (the clue goes around or about the answer).
'EAR' is hidden in the letters of 'hearsay'.
(Other definitions for ear that I've seen before include "organ with drum" , "Aural appendage" , "Part of a cereal plant containing the seeds" , "Listener in the cornfield" , "Speculator ignoring British" .)