weather vane

or weath·er·vane


noun

a device, as a rod to which a freely rotating pointer is attached, for indicating the direction of the wind.

Origin of weather vane

First recorded in 1715–25
Also called vane, wind vane.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for weather vane

weather vane


noun

a vane designed to indicate the direction in which the wind is blowing
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012