Any of several deciduous Asian trees of the genus Ailanthus.
Oriental tree, “tree of heaven”, yielding food for silkworms.
Any tree or shrub of the genus Ailanthus of the quassia family. All have compound leaves made up of pointed leaflets and clusters of small greenish flowers with an unpleasant smell. The tree of heaven Ailanthus altissima, native to E Asia, is grown worldwide as an ornamental. It can grow to 100 ft/30 m in height and 3 ft/1 m in diameter.