Did you know?

Click any word in a definition or example to find the entry for that word

lock - definition and synonyms

 
 
 
Close

What are red words?

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.

Close

Thesaurus

The thesaurus of synonyms and related words is fully integrated into the dictionary. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning.

more
verb lock pronunciation in American English /lɑk/
Word Forms
Close
present tense
I/you/we/theylock
he/she/itlocks
present participlelocking
past tenselocked
past participlelocked
  • Facebook
  • Twitter
  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

conlang

… a language for human communication which has been invented and has not developed naturally

BuzzWord Article

Open Dictionary

spogs

spectacles; boiled sweets, candy; soft aniseed-flavoured jelly sweets coated with blue and pink sugar sprinkles

add a word

Blog

A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog