| 单词 | tractor |
| 释义 | tractor /trak"teuhr/, n. 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 tractor airplane. an airplane with a propeller so mounted. [1855-60; < L trac-, var. s. of trahere to draw, pull + -tor -TOR] |
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