The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of several South American woody shrubs or vines of the genus Bougainvillea having groups of three petallike, showy, variously colored bracts attached to the flowers.
n. Any of several South American flowering shrubs or lianas, of the genus Bougainvillea, having three showy, colorful bracts attached below each group of three inconspicuous flowers.
The Century Dictionary and Cyclopedia
n. A nyctaginaceous genus of climbing shrubs, natives of tropical and subtropical South America.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. any of several South American ornamental woody vines of the genus Bougainvillea having brilliant red or purple flower bracts; widely grown in warm regions
Word Usage
"The bougainvillea were an explosion of purple, pink, crimson, and all the shades in between, in the bright, hot, and unrelenting sun."