ˈtwīˌlīt, usu -īd.+V noun
Usage: often attributive
Etymology: Middle English, from twi- + light
1. : the light from the sky between full night and sunrise or between sunset and full night produced by diffusion of sunlight through the atmosphere and its dust — compare astronomical twilight , civil twilight , nautical twilight
2.
a. : a state of imperfect clarity, of dubiety, indefiniteness, indistinctness, or transition
the cynical, truculent democratic twilight to which they are expected to be loyal — R.S.Lynd
he created a twilight which dimmed the brightness of Mother's success — Dorothy C. Fisher
a twilight between belief and disbelief — Walter Moberly
b. : a period of decline
approaching the inglorious twilight of his career — Oscar Handlin
3. or twilight blue
a. : a variable color averaging a pale purplish blue to pale violet that is lighter than dusk blue
b. : a grayish blue that is redder and paler than electric, greener and paler than copenhagen, and redder, lighter, and stronger than Gobelin