mouthpiece
mouth·piece
noun
3.
a spokesperson (as a lawyer)
4.
(especially boxing) equipment that protects an athlete''s mouth
6.
the aperture of a wind instrument into which the player blows directly
Origin
From mouth + piece.
Related words
Word family
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.