noun.
A person having white ancestors except for one black great-grandparent. Used especially as a classification under certain European colonial legal systems and now considered offensive.
The Century Dictionary and Cyclopedia
noun.
The offspring of a quadroon and a white person; a person having one eighth negro blood.
the GNU version of the Collaborative International Dictionary of English
noun.
The offspring of a quadroon and a white person; a mestee.