To announce or record one's own arrival at a hotel, airport etc.
To verify a person's information and record their arrival, such as at a hotel, airport, etc.
To integrate new revisions into the public or master version of a file in a version control system.
To visit in order to see how someone is doing.
To contact another person in order to keep the other person informed of one's situation.
To return (a book to a library, source code to a repository, etc.).
To enter solitary confinement at one's own request for protection from other prisoners.
To send somebody to solitary confinement; to make somebody be admitted to solitary confinement.
To succeed in doing something, for example in reaching a place, going somewhere, attending an event, arriving in time for something, adding to one's schedule or itinerary, or in getting where one wants to be in one's life or career, which sometimes means becoming or wanting to become successful (succeed in a big way) or famous.
Used other than figuratively or idiomatically: see make, it.
To have sexual intercourse; do it.
To succeed in surviving, in living through something.