layover  is a period of time spent during a trip, sometimes overnight, while waiting for a transportation connection - usually a change of planes
 
 
Other definition:
Layover is the  time period spent between travel segments, often being several hours waiting for the  connecting flight.
 
Other definition:
Layover is the  usually an overnight stop during the  flight portion of a trip, involving
 a change of airplanes or another form of transportation.
 
    
        
                                        