vane

• n.
  • flat surface that rotates and pushes against air or water

    同义词： blade

  • mechanical device attached to an elevated structure; rotates freely to show the direction of the wind

    同义词： weathervane weather vane wind vane

  • a metal fin attached to the tail of a bomb or missile in order to stabilize or guide it
  • the flattened weblike part of a feather consisting of a series of barbs on either side of the shaft

    同义词： web

以上来源于: WordNet