check in

verb

Definition of check in

  1. intransitive verb
  2. 1 :  to register at a hotel

  3. 2 :  to report one's presence or arrival check in at a convention

  4. transitive verb
  5. :  to satisfy all requirements in returning check in the equipment after using

1918

First Known Use of check in

1918



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capable of being altered or controlled

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