What is Tract ?
Tract is (noun) 1. a large area of land Whole tracts of forest have been contaminated by acid rain. 2. a short pamphlet, usually on a religious subject Someone pushed a tract on the dangers of alcohol through our letterbox. 3. a system of organs and tubes in the body which are linked together The respiratory tract takes air into the lungs.
source: Easier English, Student Dictionary Upper Intermediate Level