/ Dictionary / Index M Manua Islands: Meaning and Definition of Find definitions for: Ma•nu'a Is'lands Pronunciation: (mä-n'ä, mu-n'u), [key] a group of three small islands in the E part of American Samoa. 1700; ab. 5 sq. mi. (13 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Manu manual 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