The Collaborative International Dictionary of English v.0.48:

Afro-American \Afro-American\ n.
   1. an American whose ancestors were born in Africa.

   Syn: African-American, African.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Afro-American \Afro-American\ adj.
   1. 1 of or pertaining to or characteristic of Americans of
      African ancestry or their history or culture.

   Syn: African-American.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Afro-American
    adj 1: pertaining to or characteristic of Americans of African
           ancestry; "Afro-American culture"; "many black people
           preferred to be called African-American or Afro-American"
           [syn: African-American, Afro-American]
    n 1: an American whose ancestors were born in Africa [syn:
         African-American, African American, Afro-American,
         Black American]