Oreo

Brand name of unknown origin, trademarked in 1912.

Oreo (plural Oreos)

1. A cookie made up of two light black, chocolate wafers joined by a layer of white, sugary filling.
2. (US, mildly pejorative, slang) A black person who embodies the social and cultural features of a white person
   • 1971, Iceberg Slim, The Naked Soul of Iceberg Slim, Holloway House:

     She's a pure Oreo. You know, like the cookie, black outside and white inside.

• (acting white): coconut, Twinkie, banana (Asian)

• Uncle Tom
• Oreo cookie

• -eroo, oo-er, ooer