Webster's 1913 Dictionary
RHATANY; RHATANHY
Rhat "a *ny, Rhat "an *hy, n. Etym: [Sp. ratania, rataña, Peruv. rataña.]
Defn: 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.
New American Oxford Dictionary
rhatany
rhat a ny |ˈratn-ē ˈrætni | ▶noun 1 an astringent extract of the root of a South American shrub, used in medicine. 2 the partially parasitic South American shrub that yields this root, which is also used as a source of dye. [Genus Krameria, family Krameriaceae. ] ORIGIN early 19th cent.: from modern Latin rhatania, via Portuguese and Spanish from Quechua ratánya.
Oxford Dictionary
rhatany
rhatany |ˈratəni | ▶noun 1 [ mass noun ] an astringent extract of the root of a South American shrub, used in medicine. 2 the partially parasitic South American shrub which yields rhatany, which is also used as a source of dye. ●Genus Krameria, family Krameriaceae. ORIGIN early 19th cent.: from modern Latin rhatania, via Portuguese and Spanish from Quechua ratánya.
The Wordsmith Dictionary