Wordnet 3.0
NOUN (2)
1.
a person whose reactions to something serve as an indication of its acceptability;
- Example: "I would use newspapermen as a sounding board for such policies"2.
(music) resonator consisting of a thin board whose vibrations reinforce the sound of the instrument;
[syn: sounding board, soundboard]
WordNet (r) 3.0 (2006):
sounding board
n 1: a person whose reactions to something serve as an
indication of its acceptability; "I would use newspapermen
as a sounding board for such policies"
2: (music) resonator consisting of a thin board whose vibrations
reinforce the sound of the instrument [syn: sounding board,
soundboard]