Definitions of vane

  1. mechanical device attached to an elevated structure; rotates freely to show the direction of the wind
  2. the flattened weblike part of a feather consisting of a series of barbs on either side of the shaft
  3. a metal fin attached to the tail of a bomb or missile in order to stabilize or guide it
  4. A contrivance attached to some elevated object for the purpose of showing which way the wind blows; a weathercock. It is usually a plate or strip of metal, or slip of wood, often cut into some fanciful form, and placed upon a perpendicular axis around which it moves freely.
  5. Any flat, extended surface attached to an axis and moved by the wind; as, the vane of a windmill; hence, a similar fixture of any form moved in or by water, air, or other fluid; as, the vane of a screw propeller, a fan blower, an anemometer, etc.
  6. The rhachis and web of a feather taken together.
  7. One of the sights of a compass, quadrant, etc.
  8. A flag or banner: a thin slip of wood or metal at the top of a spire, etc., to show which way the wind blows: a weather- cock: the thin web of a feather.
  9. A thin plate, pivoted out of center, on a vertical rod, so as to turn its shorter end toward the point from which the wind blows.
  10. An arm or blade, as of a windmill, propeller, etc.
  11. The shaft and barbs of a feather.
  12. Thin slip on a spindle at the top of a spire, for the purpose of showing which way the wind blows; the blade of a windmill, propeller, & c.; the part of a feather on the sides of the shaft.
  13. A thin plate of metal, or slip of wood, cut into some figure and made to move on a stem at the top of a spire or any other elevation, in order to show the direction of the wind; a weather- cock; any flat extended surface moved by the wind.
  14. The vexillum or web of a feather, consisting of barbs, etc..
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