- the cuckoopint.
- any of various plants belonging to the genus Trillium, native to eastern North America, of the lily family, as T. erectum, having rank-smelling purple, yellow, or white flowers.
- any of various North American herbaceous plants of the genus Trillium, such as T. grandiflorum, having a whorl of three leaves and three-petalled solitary flowers: family Trilliaceae
- any of various aroid plants, esp the cuckoopint
