Meaning

noun the cardinal number that is the sum of one and one or a numeral representing this number

noun one of the four playing cards in a deck that have two spots

adjective being one more than one

originPIE word *dwóh₁ From Middle English two, twa, from Old English twā, feminine and neuter of twēġen (whence twain), from Proto-West Germanic *twai-, from Proto-Germanic *twai, from Proto-Indo-European *dwóh₁. Cognates Cognate with Scots twa (“two”); North Frisian tou, tuu (“two”); Saterland Frisian twäin, two (“two”); West Frisian twa (“two”); Dutch twee (“two”); Low German twee, twei (“two”);…

Etymology from Wiktionary, CC BY-SA 3.0