/ Dictionary / Index U Upolu: Meaning and Definition of Find definitions for: U•po•lu Pronunciation: (-pō'l), [key] — n. an island in Western Samoa, in the S Pacific: the home of Robert Louis Stevenson for the last five years of his life. 108,000; 430 sq. mi. (1113 sq. km). Cap.: Apia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. upmost upon Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language