Main Entry: ¹dun

Pronunciation: \ˈdən\

Function: adjective

Etymology: Middle English, from Old English dunn — more at dusk

Date: before 12th century

1 a : having the color dun b of a horse : having a grayish-yellow coat with black mane and tail
2 : marked by dullness and drabness

— dun·ness \ˈdən-nəs\ noun