Mestizo
Defined in 2 dictionaries — Bouvier (1914), Black's (1910)
Bouvier's Law Dictionary and Concise Encyclopedia
John Bouvier; revised by Francis Rawle · 1914
The offspring of a Spaniard or other white person and an American Indian. Worcester.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
A mongrel or person of mixed blood; sometimes used as equivalent to "octoroon," that is, the child of a white person and a quadroon, sometimes as denoting a person one of whose parents was a Spaniard and the other an American Indian.