willow herb

  1. any of numerous plants belonging to the genus Epilobium, of the evening primrose family, having terminal clusters of purplish or white flowers.
Compare fireweed.

Origin of willow herb

First recorded in 1570–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for willowherb


  1. any of various temperate and arctic onagraceous plants of the genus Epilobium, having narrow leaves, terminal clusters of pink, purplish, or white flowers, and willow-like feathery seeds
  2. rosebay willowherb See rosebay
  3. purple loosestrife See loosestrife
  4. hairy willowherb See codlins-and-cream
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012