Source : Webster's Revised Unabridged Dictionary (1913)

Poinciana \Poin`ci*a"na\, n. [NL. Named after M. de Poinci, a
   governor of the French West Indies.] (Bot.)
   A prickly tropical shrub ({C[ae]salpinia, formerly Poinciana,
   pulcherrima}), with bipinnate leaves, and racemes of showy
   orange-red flowers with long crimson filaments.

   Note: The genus {Poinciana} is kept up for three trees of
         Eastern Africa, the Mascarene Islands, and India.

Source : WordNet®

Poinciana
     n 1: small subgenus of ornamental tropical shrubs or trees; not
          recognized in some classifications [syn: {subgenus
          Poinciana}]
     2: a tropical flowering shrub having bright orange or red
        flowers; sometimes placed in genus Poinciana [syn: {bird
        of paradise}, {Caesalpinia gilliesii}, {Poinciana
        gilliesii}]