The Collaborative International Dictionary of English v.0.48:

Jacaranda \Jac`a*ran"da\, n. [Braz.; cf. Sp. & Pg. jacaranda.]
   (Bot.)
   (a) The native Brazilian name for certain leguminous trees,
       which produce the beautiful woods called king wood,
       tiger wood, and violet wood.
   (b) A genus of bignoniaceous Brazilian trees with showy
       trumpet-shaped flowers.
       [1913 Webster]

WordNet (r) 3.0 (2006):

jacaranda
    n 1: an important Brazilian timber tree yielding a heavy hard
         dark-colored wood streaked with black [syn: Brazilian
         rosewood, caviuna wood, jacaranda, Dalbergia nigra]