octoroon

• n. 有八分之一黑人血统的混血儿

octa-,八，-oon,大词后缀，词源同quadroon.

octoroon (n.)

1861, irregular formation from Latin octo "eight" (see eight) + suffix abstracted from quadroon (in which the suffix actually is -oon). Offspring of a quadroon and a white; so called for having one-eighth Negro blood.