Definition of blood flower in English:

blood flower

noun

  • 1A tropical American milkweed, Asclepias curassavica, which has orange-red flowers and was formerly used medicinally as a styptic and purgative.

  • 2Blood lily.

    See also blood lily

Origin

Early 18th century; earliest use found in Hans Sloane (1660–1753), physician and collector.