African American Vernacular English

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The set of vernacular or nonstandard varieties of English spoken by working-class African Americans and often by other African Americans in informal contexts.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• proper noun A variation of Modern English spoken predominately by lower socioeconomic class individuals of African descent, usually in urban or suburban surroundings in the United States.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a nonstandard form of American English characteristically spoken by African Americans in the United States