I. sə-ˈmir-ē-ən adjective
Date: 1580
: very dark or gloomy
under ebon shades…in dark Cimmerian desert ever dwell — John Milton
II. noun
Etymology: Latin Cimmerii, a mythical people, from Greek Kimmerioi
Date: 1584
: any of a mythical people described by Homer as dwelling in a remote realm of mist and gloom