/ Dictionary / Index W water pimpernel: Meaning and Definition of Find definitions for: wa'ter pim"pernel Pronunciation: [key] the brookweed. the pimpernel, Anagallis arvensis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. water pill water pipe Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language