WordNet (r) 3.0 (2006):

royal poinciana
    n 1: showy tropical tree or shrub native to Madagascar; widely
         planted in tropical regions for its immense racemes of
         scarlet and orange flowers; sometimes placed in genus
         Poinciana [syn: royal poinciana, flamboyant, flame
         tree, peacock flower, Delonix regia, Poinciana
         regia]