Noun
A thin board which propagates the sound in a piano, in a violin, and in some other musical instruments.
A board or structure placed behind or over a pulpit or rostrum to give distinctness to a speaker's voice.
See Sound boarding, under Sound, a noise.
Source: Webster's dictionarysounding board
I would use newspapermen as a sounding board for such policies Source: Internet
If you’re struggling with this, use a friend (ideally a Virgo or Scorpio) as a sounding board. Source: Internet
As well, she acted as his sounding board, making Trudeau explain every one of his platform points in direct and simple language, and restating anything that sounded complex or confusing. Source: Internet
Faculty advisors will advise students on technical directions and be a sounding board for new ideas, similar to a graduate school advisor. Source: Internet
I am going through a painful learning curve at the moment figuring out cake tiering and types of frosting, at such times I am so thankful to have a hubby who's a great sounding board and knows how to calm me down and cheer me up. Source: Internet
He was a wonderful sounding board, but he wasn’t making final decisions.” Source: Internet