Definition of crinkleroot in US English:

crinkleroot

noun

North American
  • A toothwort or pepper root (genus Cardamine, family Brassicaceae (Cruciferae)).

Origin

Mid 19th century; earliest use found in Knickerbocker. From crinkle + root, so called on account of its shape.

Pronunciation

crinkleroot

/ˈkrɪŋklruːt/