Em`bou`chure" (?), n. [F., fr. emboucher to put to the mouth; pref. em- (L. in) + bouche the mouth. Cf. Embouge, Debouch.]
The mouth of a river; also, the mouth of a cannon.
2. Mus. (a)
The mouthpiece of a wind instrument.
The shaping of the lips to the mouthpiece; as, a flute player has a good embouchure.
© Webster 1913.