Definition of sideslip
Aeronautics a sideways movement of an aircraft, especially downward toward the inside of a turn. (in skiing and surfing) an act of traveling down a slope or wave in a direction not in line with one’s skis or board.
verb [no object]
skid or slip sideways:the weight counteracts the tire’s tendency to sideslip Aeronautics move in a sideslip. (in skiing and surfing) travel sideways or in any direction not in line with one’s skis or board.