keep back

US /kiːp bæk/
UK /kiːp bæk/
"keep back" picture
1.

to prevent someone from moving forward or entering a place

:
The police tried to keep back the crowd.
Please keep back from the edge of the cliff.
2.

to hide or not reveal information or feelings

:
She tried to keep back her tears.
He decided to keep back the truth from his family.