check in (EN)

phrasal verb

phrasal verb “check in”

1. to register one's arrival at a hotel, airport, or event
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   Upon reaching the hotel, they checked in at the reception to get their room keys.
2. to contact someone to report one's status or to see how they are
   He often calls his parents to check in and let them know he's doing well.
3. (in libraries) to return a borrowed item to be recorded as returned
   Please check in any borrowed books at the counter before leaving the library.