/ Dictionary / Index A Aru Islands: Meaning and Definition of Find definitions for: A'ru Is'lands Pronunciation: (är'), [key] an island group in Indonesia, SW of New Guinea. 3306 sq. mi. (8565 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. arugula arum family Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language