| Noun | 1. | ringworm bush - tropical shrub (especially of Americas) having yellow flowers and large leaves whose juice is used as a cure for ringworm and poisonous bites; sometimes placed in genus Cassia U.S.A., United States, United States of America, US, USA, America, the States, U.S. - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776 senna - any of various plants of the genus Senna having pinnately compound leaves and showy usually yellow flowers; many are used medicinally |