/ Dictionary / Index G groundsheet: Meaning and Definition of Find definitions for: ground•sheet Pronunciation: (ground'shēt"), [key] — n. a waterproof sheet of plastic, canvas, or other durable material spread on the ground, as under a sleeping bag or in a tent, for protection against moisture. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: groundsheet (Thesaurus) ground shark groundsill Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language