Answer: embouchure

AnswerCrossword Clue
EMBOUCHURERiver mouth
EMBOUCHUREMouthpiece of a musical instrument
embouchureThe way in which a player applies the mouth to the mouthpiece of a brass or wind instrument
embouchure(French) the position and use of the lips in producing a musical tone on a wind instrument
embouchureThe mouthpiece of a flute or a similar instrument
embouchureThe mouth of a river or valley