Meaning : A person whose reactions to something serve as an indication of its acceptability.
Example :
I would use newspapermen as a sounding board for such policies.
Meaning : (music) resonator consisting of a thin board whose vibrations reinforce the sound of the instrument.
Synonyms : soundboard
Sounding board ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Sounding board ka matlab kya hota hai?