/ˈɪndɪkeɪtə(r) ||; ˈɪndəˌketɚ/noun[C] 1 something that gives information or shows sth; a sign 指示器；指示牌；指标: The indicator showed that we had plenty of petrol. 指示器显示，我们的汽车有充足的汽油。The unemployment rate is a reliable indicator of economic health. 失业率是显示经济状况是否正常的可靠指标。
2 (US 美 turn signal) the flashing light on a car, etc that shows that it is going to turn right or left （汽车等的）方向指示灯 ☞picture at car 见car插图