1. a woodland plant with three leaves and a single three-petaled flower, native to North America and Asia
Usage: botanical

Examples

• The white trillium is the official flower of Ontario.
• We spotted several red trilliums blooming in the forest understory.
• Trilliums are among the first wildflowers to appear in spring.
• The large-flowered trillium can take up to seven years to bloom from seed.
• Picking trilliums is discouraged because it can kill the plant.
• The painted trillium has distinctive pink stripes on its white petals.