Triplane—An aëroplane with three wings superposed.
Trailing Edge—The rear edge of a surface.
Torque—The twisting force of a propeller tending to overturn or swerve an aëroplane sideways.
U
Up Wind—Against the wind.
W
Wake—The churned or disturbed air in the track of a moving aëroplane.
Wash—The movement of the air radiating from the sides of an aëroplane in flight.
Wings—Planes or supporting surfaces, commonly a pair of wings extending out from a central body.
Winder—An apparatus used for winding two sets of rubber strands at the same time in opposite directions or one at a time. Very often made from an egg beater or hand drill.