The term 'weather indicator' can refer to a variety of tools used to measure and predict weather conditions. One such tool is the VANE, which is a four-letter word. A VANE is a device that uses wind direction to indicate the prevailing direction of the wind. It is typically mounted on a pole or building and consists of a flat surface with markings that indicate the direction of the wind. The VANE is an important tool for meteorologists, as it helps them to accurately predict the weather.