soundboard noun. ['saʊn(d)bɔ:d] E16.
[from SOUND noun² + BOARD noun.]
1. Music. A thin board of wood placed in a musical (esp. keyboard) instrument in such a position as to increase its sound. E16.
b. A shallow grooved box having the same function in an organ. E17.

2. A sounding-board placed over or behind a pulpit etc. M18.

[TahlilGaran] English Dictionary ▲