Definition of small hartwort in US English:

small hartwort

noun

rare
  • Any of several plants of the genus Tordylium (family Apiaceae (Umbelliferae)); especially T. officinale, (formerly) used medicinally, and T. apulum, having edible leaves.

Origin

Late 18th century; earliest use found in William Withering (1741–1799), physician and botanist.