·noun An annual South American and West Indian plant (Spigelia Anthelmia).
II. Pinkroot ·noun The root of Spigelia Marilandica, used as a powerful vermifuge; also, that of S. Anthelmia. ·see definition 2 (below).
III. Pinkroot ·noun A perennial North American herb (Spigelia Marilandica), sometimes cultivated for its showy red blossoms. Called also Carolina pink, Maryland pinkroot, and worm grass.