Pinkroot

noun

1. A perennial plant (Spigelia marilandica) native to the southeast United States having flowers with a tubular corolla that is red outside and yellow inside. The rhizomes and roots were once used as a vermifuge.
2. The root of the Carolina or Indian pink, Spigelia Marilandica, a well-known vermifuge officinal in the United States: in large doses narcotic-poisonous.
3. The plant itself, an herb with showy flowers, red outside, yellow inside, common southward in the United States. Also called Maryland pinkroot and worm-grass.
4. The root of Spigelia Marilandica, used as a powerful vermifuge; also, that of Spigelia Anthelmia. See definition 2 (below).