WordNet (r) 3.0 (2006):

red trillium
    n 1: trillium of northeastern United States with sessile leaves
         and red or purple flowers having a pungent odor [syn: red
         trillium, toadshade, sessile trillium, Trillium
         sessile]
    2: trillium of eastern North America having malodorous pink to
       purple flowers and an astringent root used in folk medicine
       especially to ease childbirth [syn: purple trillium, red
       trillium, birthroot, Trillium erectum]