/ Dictionary / Index E East Side: Meaning and Definition of Find definitions for: East' Side' Pronunciation: [key] the eastern section of Manhattan, in New York City, lying to the east of Fifth Avenue. of, pertaining to, or located in this section: East Side shops. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: eastside (Thesaurus) East Rockaway East Sider Related Content Daily Word Quiz: miscreant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language