Sound"ing-board` (?), n. 1. (Mus.) A thin board which propagates the sound in a piano, in a violin, and in some other musical instruments.

2. A board or structure placed behind or over a pulpit or rostrum to give distinctness to a speaker's voice.

3. pl. See Sound boarding, under Sound, a noise.

Sound"ing-board` (?), n. 1. (Mus.) A thin board which propagates the sound in a piano, in a violin, and in some other musical instruments.

2. A board or structure placed behind or over a pulpit or rostrum to give distinctness to a speaker's voice.

3. pl. See Sound boarding, under Sound, a noise.