unicorn root uni·corn·root uncommon noun 1. any of several perennials of the genus Aletris having grasslike leaves and bitter roots reputed to cure colic Synonymscolicrootcolic rootcrow cornstar grassunicorn root Related words Broader terms liliaceous plant Narrower terms ague rootyellow colicroot Parts Aletris WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
