'Pilewort' definitions:

Definition of 'pilewort'

From: WordNet
noun
Perennial herb native to Europe but naturalized elsewhere having heart-shaped leaves and yellow flowers resembling buttercups; its tuberous roots have been used as a poultice to relieve piles [syn: lesser celandine, pilewort, Ranunculus ficaria]

Definition of 'Pilewort'

From: GCIDE
  • Pilewort \Pile"wort`\, n. (Bot.) A plant (Ranunculus Ficaria of Linn[ae]us) whose tuberous roots have been used in poultices as a specific for the piles. --Forsyth. [1913 Webster]