The Collaborative International Dictionary of English v.0.48:

Stopover \Stop"o`ver\, Stop-over \Stop"-o`ver\, a.
   Permitting one to stop over; as, a stop-over check or ticket.
   See To stop over, under Stop, v. i.
   [1913 Webster] Stopover

The Collaborative International Dictionary of English v.0.48:

Stopover \Stop"o`ver\, Stop-over \Stop"-o`ver\, n.
   1. 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.
      [Webster 1913 Suppl. +PJC]

   2. a brief visit.
      [PJC]