Definition of king's crown in English:

king's crown

noun

  • 1Melilot (obsolete).

  • 2The guelder rose, Viburnum opulus (obsolete rare).

  • 3(Chiefly US) any of several roseroot stonecrops, especially Sedum roseum and Sedum integrifolium.

Origin

Early 16th century; earliest use found in The Grete Herball.