button your lip

US /ˈbʌt.ən jʊər lɪp/
UK /ˈbʌt.ən jʊər lɪp/
"button your lip" picture
1.

callarse, guardar silencio

to stop talking or to keep quiet

:
The teacher told the noisy students to button their lip.
El profesor les dijo a los estudiantes ruidosos que se callaran.
I had to button my lip to avoid arguing with him.
Tuve que callarme para evitar discutir con él.