Source : Webster's Revised Unabridged Dictionary (1913)

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 {A. aurea}). Called
   sometimes star grass, blackroot, blazing star, and unicorn
   root.

Source : WordNet®

colicroot
     n : any of several perennials of the genus Aletris having
         grasslike leaves and bitter roots reputed to cure colic
         [syn: {colic root}, {crow corn}, {star grass}, {unicorn
         root}]