| Noun | 1. | red trillium - trillium of northeastern United States with sessile leaves and red or purple flowers having a pungent odortrillium, wake-robin, wood lily - any liliaceous plant of the genus Trillium having a whorl of three leaves at the top of the stem with a single three-petaled flower |
| 2. | red trillium - trillium of eastern North America having malodorous pink to purple flowers and an astringent root used in folk medicine especially to ease childbirthtrillium, wake-robin, wood lily - any liliaceous plant of the genus Trillium having a whorl of three leaves at the top of the stem with a single three-petaled flower |