beacon

beacon
noun
  1. a fire or light set up in a high or prominent position as a warning, signal, or celebration
    (设在高处作为警告、信号或庆贺的)烽火
    ■[often inplace names](Brit.)a hill suitable for such a fire or light
    (英)适宜点烽火的山
    Ivinghoe Beacon.
    艾温霍烽火山。
    ■a light or other visible object serving as a signal, warning, or guide, especially at sea or on an airfield
    (海上的)灯塔;(飞机场)灯标
    ■a radio transmitter whose signal helps to fix the position of a ship, aircraft, or spacecraft
    (用于确定船只、飞机或航天器位置的无线电)信标
语源
  1. Old English bēacn 'sign, portent, ensign', of West Germanic origin; related to beckon
英语宝典
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