(of hair)reddish-brown in colourWordfinderblondeauburn,blonde,dark,fair,ginger,grey,jet black,mousy,redhead,sandyOxford Collocations DictionaryAuburn is used with these nouns: curl,hairSeefull entrySee related entries:Hair colourWord Originlate Middle English: from Old French auborne, alborne, from Latin alburnus ‘whitish’, from albus ‘white’. The original sense was ‘yellowish white’, but the word became associated with brown because in the 16th and 17th centuries it was often written abrune or abroun.
See auburn in the Oxford Advanced American Dictionary