- noun a part of a musical instrument which goes into the mouth
- noun the part of a telephone that you speak into
- noun a person who speaks on behalf of someone, especially a political party
- noun part of a radio or telephone handset, which allows the user to transmit their voice
- noun a lawyer, specifically one’s defence counsel or legal representative. A term used, particularly by the underworld, since the mid-19th century. The word is sometimes extended to refer to any spokesperson.