quadroon

UK: /kwɒˈdruːn/ US: (kwo dro̅o̅n′)

WordReference Random House Unabridged Dictionary of American English © 2026

quad•roon  (kwo dro̅o̅n′), n. 

1. a person having one-fourth black ancestry;
   the offspring of a mulatto and a white.

• Latin quartus; see -oon
• alteration of Spanish cuarterón, derivative of cuarto fourth 1640–50

Collins Concise English Dictionary © HarperCollins Publishers::

quadroon / kwɒˈdruːn/ noun

1. a person who is one-quarter Black by descent

Etymology: 18th Century: from Spanish cuarterón, from cuarto quarter, from Latin quartus