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

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Example Sentences

See Examples For:

weather vane

The Nvidia-backed compute provider has become a weather vane for one of the riskiest—and most highly leveraged—corners of the AI trade.

From The Wall Street Journal ● Oct. 15, 2026

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

In doing so, it set up a great weather vane for the state of national politics.

From Slate ● Dec. 2, 2025

Matthias estimated that it was probably underneath where the weather vane was situated.

From "Redwall" by Brian Jacques

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