Webster's Revised Unabridged Dictionary · 1913

Permitting one to stop over; as, a stop-over check or ticket. See To stop over, under Stop, v. i.

the act or privilege of stopping over; stopping at a station or airport beyond the time of the departure of the train or airplane on which one came, with the purpose of continuing one's journey on a subsequent train or airplane; the temporary interruption of one's journey.

a brief visit.