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to lock up
01
to close or secure something in a place where it cannot be removed or accessed without the appropriate authorization, key, or combination
Grammatical Information
Composition
phrasal
Action verb
Regular
Separable
Particle
up
Base verb
lock
Present tense
lock up
3rd person singular
locks up
Present participle
locking up
Past simple
locked up
Past participle
locked up
Examples
He remembered to lock the house up before leaving for vacation.
02
to confine a person in a place, such as a prison, where they cannot escape without one's permission
Examples
The police locked up the suspect in the detention center.
