The definition of a mulatto is a person who has one black parent and one white parent.
An example of a mulatto is Barack Obama.
nounpl. -·toes or -·tos
a person with mixed black and Caucasoid ancestry; specif., a person who has one black and one white parent
Origin of mulattoSpanish and Portuguese mulato, mulatto, of mixed breed, origin, originally young mule from mulo, mule from Classical Latin mulus
of a mulatto
nounpl. mu·lat·tos, or mu·lat·toes Often Offensive
A person of mixed white and black ancestry, especially one having one white and one black parent.
Origin of mulattoSpanish mulato small mule, person of mixed race, mulatto from mulo mule from Old Spanish from Latin mūlus
(plural mulattoes or mulattos)