ˈvoice box noun [countable] the part of your throat that you use to produce sounds when you speak
Synonym : larynx [TahlilGaran] Dictionary of Contemporary English ▲
voice box n. The part of the throat where the sound of your voice is made; the larynx.
Mr. Smith's voice box was taken out in an operation, and he could not talk after that. [TahlilGaran] English Idioms Dictionary ▲