Real Dictionary

wingover in British English
an aerial maneuver in which an airplane enters a steep climbing turn until almost stalled, rolls beyond a vertical bank, then noses down and dives until normal flight is resumed in a direction approximately opposite to the original direction of flight
noun: a manoeuvre in which the direction of flight of an aircraft is reversed by putting it into a climbing turn until nearly stalled, the nose then being allowed to fall while continuing the turn
noun: an airplane maneuver involving a steep, climbing turn to a near stall, then a sharp drop of the nose, a removal of bank, and a final leveling off in the opposite direction