sounding-board

sounding-board is defined in Webster's Unabridged Dictionary (1913) with 2 senses. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.A board or structure placed behind or over a pulpit or rostrum to give distinctness to a speaker's voice.
  2. 2.pl. See Sound boarding, under Sound, a noise.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

Related questions

Reverse-dictionary questions

Definition-first questions whose answer is sounding-board.

Sources