The Collaborative International Dictionary of English v.0.48:

juba \ju"ba\, n.; pl. jub[ae] (-b[=e]). [L., a mane.]
   1. (Zool.) The mane of an animal.
      [1913 Webster]

   2. (Bot.) A loose panicle, the axis of which falls to pieces,
      as in certain grasses.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

juba \ju"ba\, n.
   A dance developed by slaves in the U. S., having a lively
   tune and accompanied by a complex rhythmic clapping, and by
   slapping the thighs.
   [PJC]

         Wild crap-shooters with a whoop and a call
         Danced the juba in their gambling-hall.  --Vachel
                                                  Lindsay (The
                                                  Congo).
   [PJC]