weather vane

American  

Or weathervane

noun

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

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weather vane British  

noun

1. a vane designed to indicate the direction in which the wind is blowing

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Etymology

Origin of weather vane

First recorded in 1715–25

Example Sentences

See Examples For:

weather vane

The remarks by Williams are especially important because he is a top ally of Fed Chair Jerome Powell and is seen as a weather vane for the bank’s future moves.

From MarketWatch ● Mar. 3, 2026

Marialyce Pedersen walked around the parking lot spinning a weather vane on which she’d fashioned a picture of L.A.

From Los Angeles Times ● Jan. 9, 2026

Election betting is not so much a weather vane as a mechanism for bettors to reflect the world as they see it, and make or lose money doing so.

From Slate ● Dec. 10, 2025

Others say she’s a weather vane, pivoting when it suits her advancement.

From Washington Post ● Sep. 3, 2022

On the arm of a weather vane, pointing north!

From "Redwall" by Brian Jacques