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.

The act of checking in at a hotel, airport, etc. / (computing) The submission of source code or other material to a source control repository.

plural of A check

(transitive) To formally announce one's arrival at a location or event (usually a hotel) to a proprietor or employee of that location or event in order to secure admission, accommodations, or other services.

(transitive) To personally verify that (someone or something) is safe, copacetic, appropriate or satisfactory.

Third-person singular simple present indicative form of check on

A surname.

plural of Check

An aircraft maintenance check performed approximately every 500-800 flight hours or 200-400 cycles.

Under restraint or control.