close something up

Từ điển Oxford Advanced Learner 8th

ˌclose ˈup | ˌclose sthˈup derived
1. to shut and lock sth such as a shop/store or a building, especially for a short period of time
•Why don't we close up and go out for lunch?
•Can the last one out close up the office?
Opp: ↑open up
2. to come closer together; to bring people or things closer together
•Traffic was heavy and cars were closing up behind each other.
3. to become narrower and less open
•Every time he tried to speak, his throat closed up with fear.
Opp: ↑open up
Main entry: ↑close_derived