Definition of star anemone in US English:

star anemone

noun

  • 1A perennial herbaceous plant, Anemone hortensis (family Ranunculaceae), of northern temperate regions having white or purple stellate flowers.

  • 2A North American woodland perennial, Trientalis borealis (family Primulaceae), having white stellate flowers with prominent yellow stamens, compare "starflower".

Origin

Early 17th century; earliest use found in John Parkinson (1566/7–1650), apothecary and herbalist.