Meaning

noun the time after sunset and before sunrise while it is dark outside

noun a period of ignorance or backwardness or gloom

noun the period spent sleeping

originFrom Middle English nighte, night, nyght, niȝt, naht, from Old English niht, from Proto-West Germanic *naht (“night”), from Proto-Germanic *nahts (“night”), from Proto-Indo-European *nókʷts (“night”). Cognates Cognate with Scots nicht (“night”), Yola neeght, nieght, nyeght (“night”), North Frisian naacht, Nacht, noach, nåcht (“night”), Saterland Frisian Noacht (“night”), West Frisian nacht…

Etymology from Wiktionary, CC BY-SA 3.0