mouth·piece

[mouth-pees]
noun
1.
a piece placed at or forming the mouth, as of a receptacle or tube.
2.
a piece or part, as of an instrument, to which the mouth is applied or which is held in the mouth: the mouthpiece of a trumpet.
3.
the part of a bit or bridle, as for a horse, that passes through the animal's mouth.
4.
a person, newspaper, etc., that conveys the opinions or sentiments of others; spokesperson.
5.
Slang. a lawyer, especially a criminal lawyer.

Origin:
1675–85; mouth + piece

ambulance chaser, mouthpiece, pettifogger, shyster.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To mouthpiece
00:10
Mouthpiece is always a great word to know.
So is flibbertigibbet. Does it mean:
a chattering or flighty, light-headed person.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
Collins
World English Dictionary
mouthpiece (ˈmaʊθˌpiːs) [Click for IPA pronunciation guide]
 
n
1.  the part of a wind instrument into which the player blows
2.  the part of a telephone receiver into which a person speaks
3.  the part of a container forming its mouth
4.  a person who acts as a spokesman, as for an organization
5.  a publication, esp a periodical, expressing the official views of an organization
6.  boxing another name for gumshield

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

mouthpiece
"piece of a musical instrument that goes in the mouth," 1776, from mouth + piece. Sense of "one who speaks on behalf of others" is from 1805; in the specific sense of "lawyer" it is first found 1857.
Online Etymology Dictionary, © 2010 Douglas Harper
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Slang Dictionary

mouth(piece) definition


  1. n.
    a lawyer specializing in criminal cases. (Underworld.) : I won't answer anything without my mouth right here by me.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw Hill.
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Example sentences
He got a mouthpiece from his dentist to wear at night, but it doesn't help.
Squeeze the rubber mouthpiece to trap the water and shake the snorkel to rinse
  out its insides thoroughly.
Take your mouthpiece out and tell the miner that you are only a few breaks from
  another air split.
Then he places mouthpiece to lip and, if the instrument is not too leaky,
  ripples out a modernist roulade.
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