Meaning

noun time for Earth to make a complete rotation on its axis

noun some point or period in time

noun a day assigned to a particular purpose or observance

originInherited from Middle English day, from Old English dæġ, from Proto-West Germanic *dag, from Proto-Germanic *dagaz (“day”), from Proto-Indo-European *dʰegʷʰ- (“to burn”). Cognates Cognate with Scots day, dei, dey, dy (“day”), Yola daie, dei, dey, die (“day”),…

Etymology from Wiktionary, CC BY-SA 3.0