Pronunciation: (äm"boo-shoor', äm'boo-shoor"; Fr. än-bOO-shyr'), [key]
—pl. -churesPronunciation: (-shoorz'; Fr. -shyr'). [key]
1. the mouth of a river.
2. the opening out of a valley into a plain.
a. the mouthpiece of a wind instrument.
b. the adjustment of a player's mouth to such a mouthpiece.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.