headlightn(a) lamp at the front of a motor vehicle or railway engine （汽车或火车头的）头灯, 前灯. =>illus at App 1 见附录1插图, page xii.(b) beam from this 汽车或火车头前灯射出的光线 Driving without headlights at night is illegal. 夜晚行车不开亮头灯是违法的.
牛津英汉双解词典