| 单词 | vane |
| 释义 | vane —vaned, adj. —vaneless, adj. /vayn/, n. 1. See weather vane. 2. a blade, plate, sail, etc., in the wheel of a windmill, to be moved by the air. 3. any of a number of blades or plates attached radially to a rotating drum or cylinder, as in a turbine or pump, that move or are moved by a fluid, as steam, water, hot gases, or air. 4. a person who is readily changeable or fickle. 5. Aerospace. a. any fixed or movable plane surface on the outside of a rocket providing directional control while the rocket is within the atmosphere. b. a similar plane surface located in the exhaust jet of a reaction engine, providing directional control while the engine is firing. 6. Ornith. the web of a feather. See illus. under feather. 7. Navig. , Survey. either of two fixed projections for sighting an alidade or the like. 8. Archery. feather (def. 5). [bef. 1100; ME; OE fana flag; c. G Fahne flag, Goth fana segment of cloth; cf. GONFANON] |
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