The Collaborative International Dictionary of English v.0.48:

African \Af"ri*can\, a. [L. Africus, Africanus, fr. Afer
   African.]
   Of or pertaining to Africa.
   [1913 Webster]

   African hemp, a fiber prepared from the leaves of the
      Sanseviera Guineensis, a plant found in Africa and
      India.

   African marigold, a tropical American plant (Tagetes
      erecta).

   African oak or African teak, a timber furnished by
      Oldfieldia Africana, used in ship building.
      [1913 Webster]

   African violet .

   African-American, see African-American.
      [1913 Webster]

WordNet (r) 3.0 (2006):

African violet
    n 1: tropical African plant cultivated as a houseplant for its
         violet or white or pink flowers [syn: African violet,
         Saintpaulia ionantha]