An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

An object that is balanced on a rotating axis and indicates the direction of the wind. Also called a weather vane.

→ wind + vane "a blade, plate," O.E. fanafana "piece of cloth," O.H.G. fano, Ger. Fahne "flag, standard."

Bbâdnemâ "wind indicator," from bâd, → wind, + nemâ, from nemudan, → planetarium.