: having very little or no light
: not light in color : of a color that is closer to black than white
of a color : having more black than white : not light
the dark : a state in which no light can be seen
: a place where little or no light can be seen
: the time of day when night begins : the time when the sky becomes dark for the night
What made you want to look up dark? Please tell us where you read or heard it (including the quote, if possible).