Directors sounding bored (5)
I believe the answer is:
board
'directors' is the definition.
(I've seen this before)
'sounding bored' is the wordplay.
'sounding' shows a homophone (sound like).
'bored' sounds like 'BOARD'.
(Other definitions for board that I've seen before include "Get on - governing body" , "provisioning of meals" , "See 9" , "Supervisory committee" , "Plank" .)