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.
An appendage to an inlet or outlet opening of a pipe or vessel, to direct or facilitate the inflow or outflow of a fluid.
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. Motley.
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