Sound'-bōard1, n.
A sounding-board.
To many a row of pipes the sound-board breathes. Milton.
2 entries under this word
Soundboard
Sound'ing-bōard2, n.
n. 1. A thin board which propagates the sound in an organ, violin, or other musical instrument.
Sense 2. A board, or structure with a flat surface, suspended behind or over a pulpit or rostrum to give distinctness and effect to a speaker’s voice.
Sense 3. (pl.) Boards used in floors for intercepting the passage of sound between the different stories of a building;—called also sound-boarding.