From Planet X
1. The act of drawing or pulling, especially the drawing of a vehicle or load over a surface by motor power. 2. The condition of being drawn or pulled. 3. Pulling power, as of a draft animal or an engine. 4. Adhesive friction, as of a wheel on a track or a tire on a road. 5. A sustained pull applied mechanically especially to the arm, leg, or neck so as to correct fractured or dislocated bones, overcome muscle spasms, or relieve pressure.