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Definition of Lock up
1. Verb. Secure by locking. "Lock up the house before you go on vacation"
2. Verb. Place in a place where something cannot be removed or someone cannot escape. "She locked her jewels in the safe"
Exact synonyms: Lock, Lock Away, Lock In, Put Away, Shut Away, Shut Up
Generic synonyms: Confine
Derivative terms: Lockup
Generic synonyms: Confine
Derivative terms: Lockup