
1) An acoustic device 2) Aperture 3) Attorney,forone 4) Lawyer 5) Lawyer, to Capone 6) Runyonesque lawyer 7) Spokesman 8) Spokesman, of sorts 9) Spokesperson 10) Telephone part 11) Woodwind instrument
Found on
https://www.crosswordclues.com/clue/mouthpiece

1) Attorney 2) Embouchure 3) Gumshield 4) Lip
Found on
https://www.crosswordclues.com/clue/mouthpiece

- a part that goes over or into the mouth of a person
- an acoustic device; the part of a telephone into which a person speaks
- (informal) a spokesperson (as a lawyer)
- (especially boxing) equipment that protects an athlete's mouth
- the tube of a pipe or cigarette holder that a smoker holds in the mouth
- the aperture of a wind instrument into which the player blows directly
...
Found on

n. old-fashioned slang for one's lawyer.
Found on
http://dictionary.law.com/Default.xhtml?selected=1295
[brass] On brass instruments the mouthpiece is the part of the instrument placed on the player`s lips. The mouthpiece is a simple circular opening that leads, via a semi-spherical or conical cavity, to the main body of the instrument. Mouthpieces vary to suit the tone of the instrument. Lower instruments also have larger mouthpieces, to max...
Found on
http://en.wikipedia.org/wiki/Mouthpiece_(brass)
[scuba] In breathing sets, a mouthpiece is a part that the user grips in his mouth, to make a watertight seal between the breathing set and his mouth. It is composed of a short flattened-oval tube that goes in between the lips, with on its free end a flange that fits between the lips and the tooth and gums. On the flange there are two proje...
Found on
http://en.wikipedia.org/wiki/Mouthpiece_(scuba)
[woodwind] The mouthpiece of a woodwind instrument is that part of the instrument which is placed partly in the player`s mouth. Single-reed instruments, capped double-reed instruments, and fipple flutes have mouthpieces while exposed double-reed instruments and open flutes do not. ==Single-reed instruments== On single-reed instruments such ...
Found on
http://en.wikipedia.org/wiki/Mouthpiece_(woodwind)

• (n.) One who delivers the opinion of others or of another; a spokesman; as, the mouthpiece of his party. • (n.) An appendage to an inlet or outlet opening of a pipe or vessel, to direct or facilitate the inflow or outflow of a fluid. • (n.) The part of a musical or other instrument to which the mouth is applied in using it; as, the...
Found on
http://thinkexist.com/dictionary/meaning/mouthpiece/

(from the article `wind instrument`) ...and horns differ from other aerophones in their use of the so-called `lip reed,` which is formed when the player`s partially closed lips vibrate ... ...odd harmonics are emphasized in the clarinet spectrumparticularly at low frequencies. Other wind instruments function acoustically...
Found on
http://www.britannica.com/eb/a-z/m/130

A person who speaks on behalf of another. Thus its generally used as slang for a defense lawyer.
Found on
http://www.encyclo.co.uk/local/21213
Mouth'piece` noun 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 flu...
Found on
http://www.encyclo.co.uk/webster/M/109

Mouthpiece is the piece of plastic placed in a boxer?s mouth to protect his teeth and prevent him from biting his tongue
Found on
http://www.iluenglish.com/boxing-terms-explained-the-vocabulary-of-boxing/

Slang for an attorney.
Found on
http://www.nolo.com/dictionary/mouthpiece-term.html

Mouthpiece is slang for a lawyer.
Found on
http://www.probertencyclopaedia.com/browse/ZM.HTM

[
n] - (informal) a spokesperson (as a lawyer) 2. [n] - a part that goes over or into the mouth of a person 3. [n] - (especially boxing) equipment that protects an athlete`s mouth 4. [n] - an acoustic device 5. [n] - the tube of a pipe or cigarette holder that a smoker holds in the mouth 6. [n] - the aperture of a wind ins...
Found on
http://www.webdictionary.co.uk/definition.php?query=mouthpiece

A piece of plastic used to protect a fighter's teeth and prevent him from biting his tongue.
Found on
https://www.docsports.com/boxing/boxing-terms.html
noun (especially boxing) equipment that protects an athlete`s mouth
Found on
https://www.encyclo.co.uk/local/20974
embouchure noun the aperture of a wind instrument into which the player blows directly
Found on
https://www.encyclo.co.uk/local/20974

A piece of plastic used to protect a fighter's teeth and prevent him from biting his tongue.
Found on
https://www.encyclo.co.uk/local/23396

a piece placed at or forming the mouth, as of a receptacle or tube. · 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. · the part of a bit or bridle, as for a horse, that passes through the animal's mouth. · a person, newspaper, etc., that conveys the op...
Found on
https://www.infoplease.com/dictionary/mouthpiece

A piece of plastic used to protect a fighter's teeth and prevent him from biting his tongue.
Found on
https://www.nbcolympics.com/news/boxing-101-glossary
No exact match found.