comfrey Meaning, Definition & Usage

  1. noun perennial herbs of Europe and Iran; make rapidly growing groundcover for shaded areas
    cumfrey.
  2. noun leaves make a popular tisane; young leaves used in salads or cooked
    healing herb.

WordNet

Com"frey noun
Etymology
Prob. from F. conferve, L. conferva, fr. confervere to boil together, in medical language, to heal, grow together. So called on account of its healing power, for which reason it was also called consolida.
Definitions
  1. (Bot.) A rough, hairy, perennial plant of several species, of the genus Symphytum. ✍ A decoction of the mucilaginous root of the "common comfrey" (S. officinale) is used in cough mixtures, etc.; and the gigantic "prickly comfrey" (S. asperrimum) is somewhat cultivated as a forage plant.

Webster 1913