n.[C]

1. （乐器的）吹口；（电话机的）送话口；（容器等的）口
   the mouthpiece of a pipe

   管子的口

2. （拳击手的）护齿套
3. 代言人；喉舌
   The newspaper was only a mouthpiece of certain rich people.

   这家报纸不过是某些富人的喉舌。

4. 【俚】律师

n.

1. a part of a musical instrument, telephone, etc., designed to be put in or against the mouth.
2. a gumshield.
3. chiefly derogatory a person who speaks on behalf of another person or an organization.