Octoroon

Yet the least drop of Spanish blood, if it be only of quadroon or octoroon, is sufficient to raise them from the rank of slaves, and entitle them to a suit of clothes—boots, hat, cloak, spurs, long knife, and all complete, though coarse and dirty as may be,—and to call themselves Españolos, and to hold property, if they can get any.

Source: wiktionary

There would have been no legal barrier to their union; there would have been no frightful menace to white supremacy in the marriage of the negro and the octoroon: the drop of dark blood bridged the chasm.

Source: wiktionary

I dare say he has some Italians with him, but our amiable friends are not Italians. They are octoroons and African half-bloods of various shades, but I fear we English think all foreigners are much the same so long as they are dark and dirty.

Source: wiktionary

Grandmother Baxter was a quadroon or an octoroon, or in any case she was nearly white.

Source: wiktionary