American Heritage Dictionary
(4)
Century Dictionary
(2)
GNU Webster's 1913
(1)
WordNet
(6)
Elsewhere on the web
I've got news for Mr. Steele: Any party that has a narrow-minded, egotistical, and self-centered ideologue like Rush Limbaugh as a mouthpiece is not "all good."— CNN Political Ticker
For a mouthpiece, a segment of bamboo about 2 centimeters long is placed over the jointed end of the flute at the first division but in such a way as not to cover completely the opening at that point The sound is produced by the breath passing through the opening last mentioned and striking the edge of the aperture that it partially covers When played, this form of flute is held in a horizontal position.— The Manóbos of Mindanáo Memoirs of the National Academy of Sciences, Volume XXIII, First Memoir
The two cartridges used for absorbing the carbonic acid gas are of no value after having been in use for two hours If inhalation is through the mouth alone, a mouthpiece is attached to the end of the breathing tube by which the air or oxygen is supplied, the nose is closed by a clip, and the eyes are protected by goggles.— Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 Federal Investigations of Mine Accidents, Structural Materials and Fuels. Paper No. 1171
The mouthpiece is a funnel shaped tube of metal, by preference silver; and, in the horn, is exceptionally not cup shaped, but the reverse: it tapers, as a cone, from three-quarters of an inch diameter to about a minimum of three-sixteenths of an inch, and is a quarter of an inch where the smaller end of the mouthpiece is inserted in the upper opening of the crook.— Scientific American Supplement No. 819, September 12, 1891

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