pipe down

US /paɪp daʊn/
UK /paɪp daʊn/
"pipe down" picture
1.

calar a boca, ficar quieto

used to tell someone to stop talking or to be quiet

:
Will you two just pipe down? I'm trying to concentrate.
Vocês dois, podem calar a boca? Estou tentando me concentrar.
The teacher told the noisy students to pipe down.
O professor disse aos alunos barulhentos para calar a boca.