Meaning

adjective (of hair) colored a moderate reddish-brown

originEarly Modern English auburn (“brown, reddish brown”) from Middle English aubourne, abron, abroune, abrune (“light brown, yellowish brown, blond”), alteration (due to conflation with Middle English brun (“brown”)) of earlier auborne (“yellowish-white, flaxen”) from Old French auborne, alborne (“blond, flaxen, off-white”) from Medieval Latin alburnus (“whitish”), from Latin albus (“white”). More at…

Etymology from Wiktionary, CC BY-SA 3.0