offensive slang A derogatory term for a black person whose behavior is regarded as more stereotypically white than black. The term derives from the fact that Oreo cookies are black on the outside and white on the inside. Primarily heard in US.
n. an American of African descent who behaves more white than black. (Like the Oreo brand cookie, the person is black on the outside and white on the inside. Rude and derogatory.) They called Sam an oreo because he wears a suit and works downtown.