/ Dictionary / Index G Great Slave Lake: Meaning and Definition of Find definitions for: Great' Slave' Lake' Pronunciation: [key] a lake in NW Canada, in the Northwest Territories. 11,172 sq. mi. (28,935 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. great skua Great Smoky Mountains Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language