Trac'tor, n.

n. [From Lat. trahere, tractum, to draw.] 1. That which draws, or is used for drawing. 2. (pl.) (Med.) Two small, pointed bars of brass and steel, which, being drawn over diseased parts of the body, were, at one time, supposed to give relief through the agency of electricity or magnetism; — called also, from the inventor, Perkin's metallic tractors.