Meaning

noun a male sovereign; ruler of a kingdom

noun a competitor who holds a preeminent position

noun a very wealthy or powerful businessman

originFrom Middle English king, kyng, kynge, from Old English cening, cing, cining, cuning, cyncg, cyneg, cyng, cyngc, cynig, cyning, king, kining, kuning, kyning, kyningc (“king”), from Proto-West Germanic *kuning, from Proto-Germanic *kuningaz, *kunungaz (“king”), from *kunją (“clan, family, kin”), from Proto-Indo-European *ǵenh₁- (“to produce; to beget”). Equivalent to kin + -ing. Doublet of cyning…

Etymology from Wiktionary, CC BY-SA 3.0