/ Dictionary / Index T Thursday Island: Meaning and Definition of Find definitions for: Thurs'day Is'land Pronunciation: [key] an island in Torres Strait between NE Australia and New Guinea; part of Queensland: pearl fishing. 2283; 1 sq. mi. (4 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Thursday Thursdays Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language