Source : Webster's Revised Unabridged Dictionary (1913)

Bougainvillaea \Bou`gain*vil*l[ae]`a\, n. [Named from
   Bougainville, the French navigator.] (Bot.)
   A genus of plants of the order Nyctoginace[ae], from tropical
   South America, having the flowers surrounded by large bracts.

Source : WordNet®

Bougainvillaea
     n : ornamental tropical woody vines [syn: {genus Bougainvillea},
          {genus Bougainvillaea}]