- To announce or record one's own arrival at a hotel, airport etc.
- We got to the hotel last night and checked in at the front desk.
- To verify a person's information and record their arrival, such as at a hotel, airport, etc.
- The clerk checked us in at the front desk.
- To contact another person in order to keep the other person informed of one's situation.
- Kelly has to check in with her parole officer today.
- 2016, Carla Tantillo Philibert, Everyday SEL in Elementary School, →ISBN:
- During the 2 minutes of music, students first PAUSE to check in with how they are feeling.
- (transitive) To return (a book to a library, source code to a repository, etc.).
- To visit in order to see how someone is doing.
- I just wanted to check in after your accident, how are you recovering?
- 2017 January 26, Christopher D. Shea, “‘T2 Trainspotting’: The Early Reviews”, in New York Time:
- The sequel checks in with the unmoored but largely lovable characters from the first movie as they face middle age.
to record one's arrival