Mouthpiece
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 21:09的版本 （建立内容为“Category:etymology == wiktionary == [https://en.wiktionary.org/wiki/mouthpiece ref] mouth + piece == etymonline == [https://www.etymonline.com/word/mo…”的新页面）
wiktionary
mouth + piece
etymonline
mouthpiece (n.)
also mouth-piece, 1680s, "casting fitted on an open end of a pipe, etc.," from mouth (n.) + piece (n.1). Meaning "piece of a musical instrument that goes in the mouth" is from 1776. Sense of "one who speaks on behalf of others" is from 1805; in the specific sense of "lawyer" it is attested by 1857.
