\Rhat"a*ny\, Rhatanhy \Rhat"an*hy\, n. [Sp. ratania,
rata[~n]a, Peruv. rata[~n]a.]
The powerfully astringent root of a half-shrubby Peruvian
plant ({Krameria triandra}). It is used in medicine and to
color port wine. [Written also {ratany}.]
{Savanilla rhatany}, the root of {Krameria Ixina}, a native
   of New Granada.