ACACIAS

noun

1. A shrub or tree of the tribe Acacieae.
2. The thickened or dried juice of several species in Acacieae, in particular Vachellia nilotica (syn. Acacia nilotica), the Egyptian acacia.
3. A false acacia; robinia tree, Robinia pseudoacacia.

noun

1. (history) A roll or bag, filled with dust, borne by Byzantine emperors, as a memento of mortality. It is represented on medals.