Definition of richweed in English:

richweed

noun

North American
  • 1Clearweed, Pilea pumila.

  • 2Horse-balm, Collinsonia canadensis.

  • 3White snakeroot, Ageratina altissima (family Asteraceae), which contains a toxic alkaloid. Now rare.

Origin

Mid 18th century (in an earlier sense). From rich + weed.

Pronunciation

richweed

/ˈrɪtʃwiːd/