negro

adjective2

1. •
   (offensive, old-fashioned) Relating to a black ethnicity.
2. •
   (offensive, old-fashioned) Black or dark brown in color.

noun2

1. •
   (offensive, old-fashioned) A person of black African ancestry.

   • The negroes believe that its presence has a sanitary effect upon their cattle […] — 1867
2. •
   (no longer used) A slave, especially one of African ancestry.

adjective[in compounds]1

1. •
   Pertaining to the panethnic or ethnolinguistic groups associated with the proposed Negro-African superphylum.

   • The Negro-African language theory was proposed.