Definition of check–in
: an act or instance of checking in
First Known Use of check–in
CHECK–IN Defined for English Language Learners
Definition of check–in for English Language Learners
: the act or process of reporting that you have arrived at a hotel, an airport, etc. : the act or process of checking in; also : the time when people are allowed to check in
: the place where people go when they arrive at a hotel, airport, etc.
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