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  1. Oxford Dictionary

    occulting light

    • n.
      a light in a lighthouse or buoy which shines for a longer period than that for which it is cut off.

    • noun: occulting light, plural noun: occulting lights

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    occulting light

    • IPA[əˈkəltiNG līt]
    • n.
      a light in a lighthouse or buoy that is cut off briefly at regular intervals.

    Oxford American Dictionary