3. (Med.)
Defn: The root of several species of Rheum, used much as a cathartic medicine. Monk's rhubarb. (Bot.) See under Monk. — Turkey rhubarb (Med.), the roots of Rheum Emodi.
RHUBARBY
Rhu"barb*y, a.
Defn: Like rhubarb.
RHUMB
Rhumb, n. Etym: [F. rumb, Sp. rumbo, or Pg. rumbo, rumo, probably fr.
Gr. Rhomb.] (Navigation)
Defn: A line which crosses successive meridians at a constant angle; — called also rhumb line, and loxodromic curve. See Loxodromic. To sail on a rhumb, to sail continuously on one course, following a rhumb line.
RHUS
Rhus, n. Etym: [L., sumac, fr. Gr. (Bot.)
Defn: A genus of shrubs and small treets. See Sumac.
RHUSMA
Rhus"ma, n. Etym: [See Rusma.]
Defn: A mixtire of caustic lime and orpiment, or tersulphide of arsenic, — used in the depilation of hides. Knight.