round somebody up

Từ điển Oxford Advanced Learner 8th

ˌround sb/sthˈup derived
1. to find and gather together people, animals or things
•I rounded up a few friends for a party.
•The cattle are rounded up in the evenings.
2. if police or soldiers round up a group of people, they find them and arrest or capture them
•A number of suspects were rounded up and questioned.
related noun ↑round-up
Main entry: ↑round_derived