Noun | 1. | ![]() genus Acacia - large genus of shrubs and trees and some woody vines of Central and South America, Africa, Australia and Polynesia: wattle; mimosa shittah, shittah tree - source of a wood mentioned frequently in the Bible; probably a species of genus Acacia wattle - any of various Australasian trees yielding slender poles suitable for wattle Acacia catechu, catechu, Jerusalem thorn - East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu huisache, mimosa bush, scented wattle, sweet acacia, sweet wattle, Acacia farnesiana, cassie, flame tree - tropical American thorny shrub or small tree; fragrant yellow flowers used in making perfumery Acacia xanthophloea, fever tree - African tree supposed to mark healthful regions tree - a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms gum acacia, gum arabic - gum from an acacia tree; used as a thickener (especially in candies and pharmaceuticals) |