The Collaborative International Dictionary of English v.0.48:

barbasco \barbasco\ n.
   a West Indian shrub or small tree (Jacquinia keyensis)
   having leathery saponaceous leaves and extremely hard wood.

   Syn: joewood.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

barbasco
    n 1: West Indian shrub or small tree having leathery saponaceous
         leaves and extremely hard wood [syn: barbasco, joewood,
         Jacquinia keyensis]