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