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Meaning of cow parsnip

cow' pars"nip

Pronunciation: [key]
  1. any of several tall, coarse plants of the genus Heracleum, of the parsley family, as H. sphondylium or H. lanatum, having large, flat clusters of white flowers.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.