Pronunciation: (trak'tur), [key]
1. a powerful motor-driven vehicle with large, heavy treads, used for pulling farm machinery, other vehicles, etc.
2. Also called truck tractor. a short truck with a driver's cab but no body, designed for hauling a trailer or semitrailer.
3. something used for drawing or pulling.
4. Aeron.
a. a propeller mounted at the front of an airplane, thus exerting a pull.
b. Also called trac'tor air"plane. an airplane with a propeller so mounted.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

tractive efforttractor feed
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