A word used to describe self-hating African Americans who sell out their race in order to achieve higher status or to get approval from Caucasians. The word is often used inappropriately by black Americans to other blacks who behave intelligently, or do not behave like stereotypical negroes. A typical house negro gets rich, and then finds a token white wife to put on his arm, and does not associate with blacks. The antonym of house is field.
Watch Ice Cube's True To The Game on YouTube to see some examples of house in this sense.
OJ Simpson is a house negro, as well as a murderer.