■ noun
1》 a board over or behind a pulpit or stage to reflect a speaker's voice forward.
2》 a soundboard.
3》 a person whose reactions to ideas are used as a test of their validity or likely success.
↘a channel through which ideas are disseminated.
■ noun
1》 a board over or behind a pulpit or stage to reflect a speaker's voice forward.
2》 a soundboard.
3》 a person whose reactions to ideas are used as a test of their validity or likely success.
↘a channel through which ideas are disseminated.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004