The term RELATING TO WINGS can be summarized by the crossword solution ALAR, which is an acronym for 'Ailerons, Leading Edge Devices, and Rudders'. Ailerons are hinged control surfaces on the trailing edge of the wings of a fixed-wing aircraft, used to control the aircraft's roll. Leading Edge Devices are devices attached to the leading edge of the wings of an aircraft, such as slats, slots, and flaps, which are used to increase lift. Rudders are hinged control surfaces at the rear of the aircraft, used to control the aircraft's yaw. Together, these three components are essential for controlling the flight of an aircraft.