The term 'wing part' can refer to three different components of an aircraft's wing: the AILERON (7 letters), alula (5 letters), and FLAP (4 letters). The AILERON is a hinged control surface located on the trailing edge of each wing, used to control the aircraft's roll. The alula is a small, finger-like projection located at the leading edge of the wing, which helps to increase lift during takeoff and landing. Finally, the FLAP is a hinged section of the trailing edge of the wing, which increases lift and drag when deployed.