range light


Definition of range light

1 : either of two or more lights on shore placed to guide a ship by keeping it in line (as through a channel)
2a range lights plural : two white lights in the same vertical plane as the keel with one at least fifteen feet higher than and horizontally distant from the other that may be carried by a steamer under way to indicate her course
b : the after of these two lights

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First Known Use of range light

1851, in the meaning defined at sense 1

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The first known use of range light was in 1851

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Cite this Entry

“Range light.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/range%20light. Accessed 2 Dec. 2020.

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