lock - definition and synonyms


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present tense
present participlelocking
past tenselocked
past participlelocked
  1. 1
    [transitive] to fasten something such as a door or a container, usually with a key, so that other people cannot open it

    John went out and locked the door behind him.

    Have you locked the car?

    lock something in something:

    She locked the documents in the safe.

    1. a.
      [intransitive] to become fastened with a lock

      This drawer won’t lock.

  2. 2
    [intransitive] if something locks in a particular position, it is firmly fixed or held in that position

    The brakes locked and the car spun off the road.

    1. a.
      [transitive] to lock or fix something firmly in a particular position

      He locked his arms around her waist.

  3. 3
    [transitive] computing to prevent information on a computer from being changed or looked at by someone who does not have permission

    All entries are locked so no unauthorized modifications can be made.

  4. 4
    [intransitive/transitive] literary if two people’s eyes lock, they look directly into each other’s eyes