1.Definition: (used of color) having a dark hue
"Dark green", "Dark glasses", "Dark colors like wine red or navy blue"
2.Definition: brunet (used of hair or skin or eyes)
3.Definition: causing dejection
"The dark days of the war", "A dark gloomy day"
4.Definition: devoid of or deficient in light or brightness; shadowed or black
"Sitting in a dark corner", "A dark day", "Dark shadows", "Dark as the inside of a black cat"
5.Definition: lacking enlightenment or knowledge or culture
"The dark ages", "A dark age in the history of education"
6.Definition: marked by difficulty of style or expression
"Much that was dark is now quite clear to me"
7.Definition: not giving performances; closed
"The theater is dark on Mondays"
"Keep it dark"
9.Definition: showing a brooding ill humor
"A dark scowl"
10.Definition: stemming from evil characteristics or forces; wicked or dishonorable
"Darth Vader of the dark side", "A dark purpose", "Dark undercurrents of ethnic hostility"