• WordNet 3.6
    • n mouthpiece the aperture of a wind instrument into which the player blows directly
    • n mouthpiece the tube of a pipe or cigarette holder that a smoker holds in the mouth
    • n mouthpiece an acoustic device; the part of a telephone into which a person speaks
    • n mouthpiece (especially boxing) equipment that protects an athlete's mouth
    • n mouthpiece a part that goes over or into the mouth of a person "the mouthpiece of a respirator"
    • n mouthpiece a spokesperson (as a lawyer)
    • ***
Webster's Revised Unabridged Dictionary
    • Mouthpiece A person's lawyer.
    • Mouthpiece An appendage to an inlet or outlet opening of a pipe or vessel, to direct or facilitate the inflow or outflow of a fluid.
    • Mouthpiece One who delivers the opinion of others or of another; a spokesman; as, the mouthpiece of his party. "Egmont was imprudent enough to make himself the mouthpiece of their remonstrance."
    • Mouthpiece The part of a musical or other instrument to which the mouth is applied in using it; as, the mouthpiece of a bugle, or of a tobacco pipe.
    • ***
Century Dictionary and Cyclopedia
    • n mouthpiece In an instrument or utensil made to be inserted or applied to the mouth, the part which touches the lips or is held in the mouth, as in a musical instrument, a tobacco-pipe, cigar-holder, etc. See cut under clarinet.
    • n mouthpiece One who delivers the opinions of others; one who speaks on behalf of others: as, the mouthpiece of an assembly.
    • ***
Chambers's Twentieth Century Dictionary
    • n Mouthpiece the piece of a musical instrument, or tobacco-pipe, held in the mouth: one who speaks for others
    • ***


  • Karl Marx
    “The writer may very well serve a movement of history as its mouthpiece, but he cannot of course create it.”


Chambers's Twentieth Century Dictionary
A.S. múth; Ger. mund, Dut. mond.


In literature:

Tungku Musa, the Sultan's great uncle, was there to act as the King's mouthpiece, but he was in as great fear as any of them.
"In Court and Kampong" by Hugh Clifford
But for the most part the book came back to its original purpose and took its place as a mouthpiece of literature.
"Paul and the Printing Press" by Sara Ware Bassett
You two men are the mouthpiece of the hour.
"The Message" by Alec John Dawson
Of that indignation the Pope made himself the mouthpiece.
"A Student's History of England, v. 1 (of 3)" by Samuel Rawson Gardiner
An elector now is but the mouthpiece of his party; no matter what may be his individual judgment, he dare not disregard its fiat.
"Shadow and Light" by Mifflin Wistar Gibbs
By which I mean that she is the mouthpiece of all the sweeter kinds of angels.
"The Belovéd Vagabond" by William J. Locke
Byron was the mouthpiece of a certain phase of his time.
"Library of the World's Best Literature, Ancient and Modern, Vol. 7" by Various
On top of the cabinet see that the mouthpiece or, rather, the listener, is propped up so that it faces the table.
"Ted Marsh on an Important Mission" by Elmer Sherwood
She put the snorkel mouthpiece in place, but did not bother to attach the rubber strap to her head.
"The Electronic Mind Reader" by John Blaine
It was a man's voice, but obviously disguised as though the man spoke through a handkerchief held over the mouthpiece.
"Smugglers' Reef" by John Blaine
That cesspool of all infamies, the New York Herald, became the mouthpiece of all the like hypocrites.
"Diary from March 4, 1861, to November 12, 1862" by Adam Gurowski
When the pipe was well-lit, he turned it and held the mouthpiece to Pierre's lips.
"Shaman" by Robert Shea
He is no longer an individual but the mouthpiece of an oracle.
"The Life of Sir James Fitzjames Stephen, Bart., K.C.S.I." by Sir Leslie Stephen
A last faint odor was present, but he hardly noticed it, for his lips were at the mouthpiece and he was thrusting out a call for help.
"Raiders Invisible" by Desmond Winter Hall
Each Spokesman, therefore, was the mouthpiece of millions of men, women and children.
"Astounding Stories of Super-Science July 1930" by Various
The convenient form of the mouthpiece shown in Fig.
"Little Masterpieces of Science:" by Various
The latter are but the mouthpiece of an oracle so clear that a wayfaring man, though a fool, may understand it.
"Maids Wives and Bachelors" by Amelia Edith Huddleston Barr
He put his hand over the mouthpiece.
"The Caves of Fear" by John Blaine
His aim was to make the paper the mouthpiece for Welsh Nonconformity.
"Christopher Crayon's Recollections The Life and Times of the late James Ewing Ritchie as told by himself" by J. Ewing Ritchie
And one of these two men was the tongue and mouthpiece of myself.
"The White Shield" by Bertram Mitford

In poetry:

Perhaps you consider yourself an oracle,
Mouthpiece of the dead, or of some god or other.
Thirty years now I have labored
To dredge the silt from your throat.
I am none the wiser.
"The Colossus" by Sylvia Plath
He is the play, likewise the player;
The word that's said, also the sayer;
And in the books of heart and head
There is no thing he has not read;
Of time and tears he is the weigher,
And mouthpiece 'twixt the quick and dead.
"The Poet" by Madison Julius Cawein

In news:

Local restaurant owner and Whittier High alum, Joe Garcia, announced a one-day fundraiser to help replace the four band tubas and mouthpieces that marched out of Whittier High School in late June.
The NBA suspended Toronto Raptors forward Amir Johnson for one game without pay for throwing his mouthpiece at an official during the Raptors loss to the Portland Trail Blazers Monday night.
Raptors' Amir Johnson suspended 1 game for throwing his mouthpiece at referee.
NEW YORK Toronto center-forward Amir Johnson was suspended for one game without pay by the NBA on Tuesday for throwing his mouthpiece at a referee in the Raptors' loss at Portland on Monday night.
Raptors' Amir Johnson suspended for throwing mouthpiece.
Toronto's Amir Johnson threw his mouthpiece at an official and had to be restrained by teammates after he was ejected from the Raptors' 92-74 loss to the Trail Blazers on Monday night.
Raptors' Amir Johnson ejected after ball tug-of-war with ref, throws mouthpiece at official.
Ex-Piston Amir Johnson tosses mouthpiece at ref, gets tossed.
Raptors' Amir Johnson suspended 1 game for throwing mouthpiece at referee.
Raptors' Amir Johnson throws mouthpiece at referee.
The mouthpiece of the military wing of Hamas, the @AlqassamBrigade account leapt into action soon after the car containing Ahmed Jabari was hit, killing him.
But blanket assertions ("there's no such thing as a reclusive actor") and stylized writing ("his boot soles were slick and could find no purchase") keep challenging our trust in Edward 's reliability as a mouthpiece.
Jim Commentucci / The Post-Standard Mason Powell, chewing on his mouthpiece, has a.909 save percentage as a junior goalie for the No.
Raptors' Johnson suspended for throwing mouthpiece.
Steven Tyler has long been Aerosmith's mouthpiece for extremely obvious reasons.

In science:

For example, the sounds from the mouthpieces of wind instruments alone usually do not contain frequencies of simple integer relationship, but with lots of extra frequency components.
Music in Terms of Science
When the noisy vibrations of the mouthpiece enter the attached instrument with regularly shaped geometry such as a pipe, only those components from the mouthpiece associated with the right wavelengths for the pipe can form the desired standing waves resonating in the pipe.
Music in Terms of Science
In most wind instruments, the vibration that the player makes at the mouthpiece is picked up with its harmonic components selectively reinforced to produce a pleasant timbre by the air column inside a tube-shaped body.
Music in Terms of Science
A wind instrument contains some type of resonator (usually a pipe), in which a column of air is set into vibration by the player blowing into (or over) a mouthpiece attached at the end of the resonator.
Music in Terms of Science
However, the mouthpiece and the bell can have a significant effect on the resonant frequencies.
Music in Terms of Science
Without a bell or mouthpiece, the cylindrical piece of pipe will reflect all of its standing wave modes at the same point—the end of the pipe.
Music in Terms of Science
On the other hand, the mouthpiece also has an effect.
Music in Terms of Science
This frequency is known as the popping frequency because of sound that “pops” from the mouthpiece if it is removed from the instrument and stuck against the hand.
Music in Terms of Science
Thus, the mouthpiece retains some of its identity even when inserted into the instrument.
Music in Terms of Science
Together, the bell and mouthpiece cause the sound production of the brass instruments to behave like an open pipe, having all harmonics instead of just the odd ones.
Music in Terms of Science