DUSK

I. adjective Etymology: Middle English dosk, alteration of Old English dox; akin to Latin fuscus dark brown, Old English dunn dun, dūst dust Date: 13th century ~y , II. verb Date: 13th century intransitive verb to become dark, transitive verb to make dark or gloomy, III. noun Date: 1622 the darker part of twilight especially at night, darkness or semidarkness caused by the shutting out of light