embouchure
/ˌɒŋbuːˈʃʊə(r)/noun
1
- Music the way in which a player applies the mouth to the mouthpiece of a brass or wind instrument【乐】吹奏铜管乐器（或管乐器）时的口形。
1.1
- the mouthpiece of a flute or a similar instrument（长笛等类似乐器的）吹口。
2
- archaic the mouth of a river or valley〈古〉河口; 溪谷口。
词源
mid 18th cent.: French, from s'emboucher 'discharge itself by the mouth', from emboucher 'put in or to the mouth', from em - 'into' + bouche 'mouth'.