Beard about organ (3)
I believe the answer is:
ear
'organ' is the definition.
(ear is a kind of organ)
'beard about' is the wordplay.
'about' indicates the answer is hidden within the clue.
'EAR' is hidden in the letters of 'beard'.
(Other definitions for ear that I've seen before include "That makes sense" , "willingness to listen" , "Musical appreciation" , "cut" , "organ with drum" .)