any of various spiny trees or shrubs of the genus Acacia
source: WordNet 3.0
A roll or bag, filled with dust, borne by Byzantine emperors, as a memento of mortality. It is represented on medals.
source: Webster 1913
A genus of leguminous trees and shrubs. Nearly 300 species are Australian or Polynesian, and have terete or vertically compressed leaf stalks, instead of the bipinnate leaves of the much fewer species of America, Africa, etc. Very few are found in temperate climates.