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counterlight

[verb koun-ter-lahyt; noun koun-ter-lahyt]
verb (used with object), coun·ter·light·ed or coun·ter·lit, coun·ter·light·ing.
  1. to light (an interior) with windows or lights on opposite sides.
  2. to light (an object) with a window or light directly opposite.
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noun
  1. a light or window that counterlights an interior or object.
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Compare crosslight.

Origin of counterlight

First recorded in 1720–30; counter- + light1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018