Definition of pilewort in US English:

pilewort

noun

  • The celandine plant (Ranunculus ficaria).

    • ‘The plant used to be known as Pilewort, as it was used to treat haemorrhoids.’
    • ‘Pilewort occurs in most counties of Illinois and is a common plant.’

Origin

Late Middle English: from piles (because of its reputed efficacy against piles) + wort.

Pronunciation

pilewort

/-wôrt/