lock somebody out

Từ điển Oxford Advanced Learner 8th

▪ I. ˌlock sb ˈout derived
(of an employer)to refuse to allow workers into their place of work until they agree to particular conditions
related noun ↑lockout
Main entry: ↑lock_derived
 
▪ II. ˌlock sb/yourself ˈout (of sth) derived
to prevent sb from entering a place by locking the door
•I'd locked myself out of the house and had to break a window to get in.
Main entry: ↑lock_derived