a light or fire on the top of a hill that acts as a warning or signal(山顶上作为信号的)信标灯;灯塔;烽火
As part of the centenary celebrations a chain of beacons was lit across the region.作为百年庆典的一部分,这个地区各处点起了一盏盏信标灯。
figurative She was a beacon of hope in troubled times.在动荡的年代,她是人们的希望之灯。