Definitions
1.nounA shrub or tree of the tribe Acacieae.
2.nounThe thickened or dried juice of several species in Acacieae, in particular Vachellia nilotica (syn. Acacia nilotica), the Egyptian acacia.
3.nounA false acacia; robinia tree, Robinia pseudoacacia.
4.nounGum arabic; gum acacia.
5.nounAny of several related trees, such as the locust tree.
6.nounA light to moderate greenish yellow with a hint of red.
7.noun(history) A roll or bag, filled with dust, borne by Byzantine emperors, as a memento of mortality. It is represented on medals.