/ Dictionary / Index W water hemlock: Meaning and Definition of Find definitions for: wa'ter hem"lock Pronunciation: [key] any of several poisonous plants belonging to the genus Cicuta, of the parsley family, as C. virosa of Europe, and C. maculata of North America, growing in swamps and marshy places. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. water heater water hen Related Content Daily Word Quiz: confectionery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language