Ar'rōw-rōot, n.
n. 1. (Bot.) A plant of the genus Maranta. The Indians are said to employ the roots of the M. Galanga in extracting the poison of arrows, whence the name.
Sense 2. A nutritive starch, obtained from the root of the Maranta arundinacea, and from the roots and grains of several other plants;—used as medicinal food.