Aeronautics a sideways movement of an aircraft, especially downwards towards the inside of a turn.
(in skiing and surfing) an act of travelling down a slope or wave in a direction not in line with one’s skis or board:at the lip of the peak, I started with a side-slip
verb
[no object]
skid or slip sideways:the weight counteracts the tyre’s tendency to side-slip
Aeronautics move in a side-slip:every so often the machine would lose control and simply side-slip into the ground
(in skiing and surfing) travel sideways or in any direction not in line with one’s skis or board:he had side-slipped down the sheer drop from the shoulder of the mountain
side-slip in other Oxford dictionaries
Definition of side-slip in the US English dictionary