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Verb: lock in
  1. Close with or as if with a tight seal
    "This vacuum pack locks in the flavour!"
    - seal in
     
  2. Place in a place where something cannot be removed or someone cannot escape
    - lock away, lock, put away, shut up, shut away, lock up

Derived forms: locked in, locking in, locks in

Type of: confine

Encyclopedia: Lock in