Pink"root` (?), n. 1.
(Med.) The root of Spigelia Marilandica, used as a
powerful vermifuge; also, that of S. Anthelmia. See definition
2 (below).
2. (Bot.) (a) A
perennial North American herb (Spigelia Marilandica), sometimes
cultivated for its showy red blossoms. Called also Carolina
pink, Maryland pinkroot, and worm grass.
(b) An annual South American and West Indian
plant (Spigelia Anthelmia).