Acoustic device for discovering the directors' opinion? (8,5)
I believe the answer is:
sounding board
'discovering the directors' opinion?' is the definition.
I can't tell whether this defines the answer.
'acoustic device' is the wordplay.
'acoustic' becomes 'sounding' (I can't justify this - if you can you should give a lot more credence to this answer).
'device' becomes 'board' (board is a kind of device).
'sounding'+'board'='SOUNDING-BOARD'
'for' is the link.
Can you help me to learn more?
(Other definitions for sounding board that I've seen before include "means of testing idea" , "Means of testing opinion" , "Recipient of experimental ideas perhaps" , "One whose opinion is sought" .)