Negro n. : A black man; especially, one of a race of black or very dark persons who inhabit the greater part of tropical Africa, and are distinguished by crisped or curly hair, flat noses, and thick protruding lips; also, any black person of unmixed African blood, wherever found.

Negro a. : Of or pertaining to negroes; black.

Example:
What is the impact of the Negro Leagues in America?

Taxonomy
New York, the Negro, the American, neutral term, neutral, offensive, American Negro, late 1960s, African American, black person, Washington, free encyclopedia, racist, commonly used, slur, 1970s, adjective, skin color.

Defination from the web:
Negro is a term referring to people of Black ancestry. ... African-American organizations and institutions' use of the term—such as the United Negro College Fund. In current English language usage, "Negro" is generally considered acceptable in a historical context, such as baseball's ...