Sounding-board

Webster's Dictionary of the English Language

·noun ·see Sound boarding, under Sound, a noise.

II. Sounding-board ·noun A thin board which propagates the sound in a piano, in a violin, and in some other musical instruments.

III. Sounding-board ·noun A board or structure placed behind or over a pulpit or rostrum to give distinctness to a speaker's voice.

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