noun
1 part of a telephone
VERB + MOUTHPIECE
▪ cover , cover up , put your hand over
▪
He put his hand over the ~ and called his wife to the phone.
2 sb/sth that informs the public about sb/sth's opinions
ADJECTIVE
▪ official , political
VERB + MOUTHPIECE
▪ act as , be
PREPOSITION
▪ ~ for , ~ of
▪
The media act as a ~ for the ruling party.