› a way of measuring or understanding something, for example, people's opinions or a level of something: a gauge of sth Productivity is an important gauge of economic performance. It's not easy to get any kind of accurate gauge of what young people think about this.
› a method, set of calculations, etc. used to try to predict what will happen in the future: According to the government's economic forecasting gauge, inflation will fall by another 1% next year.
› a piece of equipment for measuring the amount or size of something: a fuel gauge