Colorado

wiktionary

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Borrowed from Spanish colorado

etymonline

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Colorado

U.S. state (organized as a territory 1861, admitted as a state 1876), named for the river, Spanish Rio Colorado, from colorado "ruddy, reddish," literally "colored," past participle of colorar "to color, dye, paint," from Latin colorare "to color, to get tanned," from color "color of the skin, color in general" (see color (n.)).