The Collaborative International Dictionary
unicorn root
Colicroot \Col"ic*root`\, n. A bitter American herb of the Bloodwort family, with the leaves all radical, and the small yellow or white flowers in a long spike ( Aletris farinosa and Aletris aurea). Called sometimes star grass, blackroot, blazing star, and unicorn root.
Wiktionary
unicorn root
n. A flowering plant of the genus (taxlink Aletris genus).
WordNet
unicorn root
n. any of several perennials of the genus Aletris having grasslike leaves and bitter roots reputed to cure colic [syn: colicroot, colic root, crow corn, star grass]
Usage examples of "unicorn root".
Tomara brought her special teas, brewed from cane berry leaves, honey, and unicorn root, to make her womb more fertile.