/ Dictionary / Index W water chestnut: Meaning and Definition of Find definitions for: wa'ter chest"nut Pronunciation: [key] any aquatic plant of the genus Trapa, bearing an edible, nutlike fruit, esp. T. natans, of the Old World. the fruit itself. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. water carrier water chinquapin Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language