Definition of fool's parsley in US English:

fool's parsley


  • A poisonous white-flowered plant of the parsley family, with fernlike leaves and an unpleasant smell, native to Eurasia and North Africa.

    Aethusa cynapium, family Umbelliferae

    • ‘Do you have witches’ thimbles, devil's nettle, fool's parsley, or wolf's bane in your garden?’
    • ‘Both poison hemlock and fool's parsley smell nasty; just roll some leaves between your thumb and forefinger, and smell.’
    • ‘Although fairly toxic, fool's parsley has occasionally been used in folk medicine.’
    • ‘This is fool's parsley, a plant you'd better not consume.’