horseradish-tree

from The Century Dictionary.

• noun A tree, Moringa pterygosperma, common in many parts of India, and cultivated there, as well as in various other tropical countries, for the sake of the fruit, which is eaten as a vegetable or pickled.
• noun In Australia, a tree of the pokeweed family, Gyrostemon cotinifolius, so called from the taste of its leaves. The bark contains a bitter principle, for which reason it is also known as quinine-tree and medicine-tree.