Webster’s Revised Unabridged Dictionary · 1913
Mestizo
Mes·ti′zo, n.; pl. Mestizos (#). [Sp. mestizo; akin to OF. mestis, F. métis; all fr. (assumed) LL. mixtitius, fr. L. mixtus mixed, p. p. of miscere to mix. See Mix, and cf. Mestee, MÉtif, MÉtis, Mustee.] The offspring of an Indian or a negro and a European or person of European stock. [Spanish America]
Mestizo wool, wool imported from South America, and produced by mixed breeds of sheep.