The Collaborative International Dictionary of English v.0.48:

Dracaena \Dra*c[ae]"na\, prop. n. [NL., fr. Gr. ? she-dragon.]
   (Bot.)
   A genus of liliaceous plants with woody stems and
   funnel-shaped flowers.
   [1913 Webster]

   Note: Drac[ae]na Draco, the source of the dragon's blood of
         the Canaries, forms a tree, sometimes of gigantic size.
         [1913 Webster]

WordNet (r) 3.0 (2006):

dracaena
    n 1: an agave that is often cultivated for its decorative
         foliage