Tract"or (?), n. [NL., from L. trahere, tractum, to draw.] 1. That which draws, or is used for drawing.

2. pl. (Med.) Two small, pointed rods of metal, formerly used in the treatment called Perkinism.

Tract"or (?), n. An aëroplane flying machine having one or more tractor screws.

Tract"or (?), n. [NL., from L. trahere, tractum, to draw.] 1. That which draws, or is used for drawing.

2. pl. (Med.) Two small, pointed rods of metal, formerly used in the treatment called Perkinism.

Tract"or (?), n. An aëroplane flying machine having one or more tractor screws.

• a vehicle having large rear wheels and smaller front wheels which is used in farms for pulling farm equipment or preparing the fields
  
• (US) a truck (or lorry) for pulling a trailer
  
• an apparatus which creates drag by pulling against a surface
  
• any piece of machinery that pulls something