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check in - definition and synonyms

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phrasal verb
Word Forms
present tense
I/you/we/theycheck in
he/she/itchecks in
present participlechecking in
past tensechecked in
past participlechecked in
  1. 1
    [intransitive] to arrive at a hotel or a private hospital where you have arranged to stay and give your personal details to the person working at the reception desk

    Have you checked in yet?

  2. 2
    [intransitive] tourism to arrive at an airport and show your ticket to an official

    You must check in at least one hour before your flight.

  3. 3
    [transitive] tourism same as check
  4. 4
    [transitive] check someone in to deal with someone when they arrive at a hotel or a private hospital where they have arranged to stay, or at an airport from which they have arranged to fly
  5. From our crowdsourced Open Dictionary
    to use a smartphone to indicate on social media that you have arrived at a place

    Alicia Florrick checked in to Cafe Royal with Cary Argos and Kalinda Sharma.

    Submitted from United Kingdom on 28/08/2015
See also main entry: check


a lifestyle focussing on simple pleasures such as comfort and cosiness in the home, and spending time with friends and family

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Open Dictionary


a form of location that involves the underwater detonation of a bomb which causes sound waves that are picked up by ships

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