meaning of mouthpieces
1. 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.
2. An appendage to an inlet or outlet opening of a pipe or vessel, to direct or facilitate the inflow or outflow of a fluid.
3. One who delivers the opinion of others or of another; a spokesman; as, the mouthpiece of his party.
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