check%20in

verb

1. 1

   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.”

2. 2

   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.”

3. 3

   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.”

4. 4

   To return (a book to a library, source code to a repository, etc.).

5. 5

   To visit in order to see how someone is doing.

   “I just wanted to check in after your accident. How are you recovering?”

6. 6

   To enter solitary confinement at one's own request for protection from other prisoners.