n.
Pronunciation: ' sau ̇ n(d)- ˌ bo ̇ rd
Function: noun
Date: 1504
1 : a thin resonant board (as the belly of a violin) so placed in an instrument as to reinforce its tones by sympathetic vibration ― see VIOLIN illustration
2 : SOUNDING BOARD 1A
3 usually sound board : SOUND CARD