weather vane

• Dispositif installé sur un toit ou un point élevé pour indiquer la direction du vent, souvent en forme de flèche ou de coq.

A device that is mounted on a roof or high point to show the direction the wind is blowing, often shaped like an arrow or a rooster.

1. Meteorological instrumentB1formal

   A device used to show the direction of the wind, typically mounted on a roof or high point.

   Girouette

   • The weather vane on the barn pointed north.
   • Farmers often use a weather vane to predict changes in the weather.
   • The old church has a copper weather vane shaped like a rooster.

2. Figurative: changeable personC1informal

   A person who frequently changes their opinions or loyalties, like a weather vane turning in the wind.

   Personne changeante

   • He's a political weather vane, always shifting his stance.
   • Don't trust her promises; she's a weather vane.
   • The manager is a weather vane, changing his mind with every new idea.