A weather vane is a metal object on the roof of a building which turns round as the wind blows. It is used to show the direction of the wind. a metal object fixed to the top of a building that blows around to show the direction the wind is coming from
Originally used as a wind vane, it is an instrument that indicates the wind direction The name developed based on observations on what kind of weather occurred with certain wind directions Creative designs often adorn the tops of barns and houses