D defs.my
Entry 1 sense Webster, 1913

Trillium

· Tril·li·um · IPA /ˈtɹɪli.əm/
01 n. A genus of liliaceous plants; the three-leaved nightshade; -- so called because all the parts of the plant are in threes.
  1. 1.
    A genus of liliaceous plants; the three-leaved nightshade; -- so called because all the parts of the plant are in threes.(Bot.)