mouthpiece
/ˈmaʊθpiːs/noun
1
- a thing designed to be put in or against the mouth衔在（或紧贴）嘴部之物：
the snorkel's mouthpiece.
水下呼吸管的呼气口。
1.1
- a part of a musical instrument placed between or against the lips（乐器）吹口。
1.2
- the part of a telephone for speaking into（电话）话筒。
1.3
- the part of a tobacco pipe placed between the lips烟斗咬嘴。
1.4
- a gumshield（拳击运动员的）护齿。
2
- chiefly derogatory a person or organization who speaks on behalf of another person or organization〈主贬〉代言人; 喉舌：
the media acts as a mouthpiece for the Party.
媒体成了政党的代言人。
2.1
- informal, chiefly N. Amer. a lawyer〈非正式, 主北美〉律师。