I. ˈdəsk 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
: dusky
II. verb
Date: 13th century
intransitive verb
: to become dark
transitive verb
: to make dark or gloomy
III. noun
Date: 1622
1. : the darker part of twilight especially at night
2. : darkness or semidarkness caused by the shutting out of light