vane

vane is defined in Webster's Unabridged Dictionary (1913) with 3 senses. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.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.
  2. 2.(Zoöl.) The rhachis and web of a feather taken together.
  3. 3.One of the sights of a compass, quadrant, etc. Vane of a leveling staff. (Surv.) Same as Target, 3.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

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