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