The directors sound bored (5)
I believe the answer is:
board
'the directors' is the definition.
(I've seen this before)
'sound bored' is the wordplay.
'sound' indicates a 'sounds like' (homophone) clue.
'bored' sounds like 'BOARD'.
(Other definitions for board that I've seen before include "See 21 Down" , "Live in lodgings" , "Get on (ship)" , "Collection of directors" , "Food - table - directors" .)