ancient light


Definition of ancient light

: a window or other opening that has been used 20 or more years without interruption and is therefore protected at common law against obstruction by an adjoining holder

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First Known Use of ancient light

1718, in the meaning defined above

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The first known use of ancient light was in 1718

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Cite this Entry

“Ancient light.” Dictionary, Merriam-Webster, Accessed 20 Jan. 2021.

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