/ Dictionary / Index U Upper Darby: Meaning and Definition of Find definitions for: Up'per Dar'by Pronunciation: [key] a town in SE Pennsylvania, near Philadelphia. 84,054. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. uppercut upper deck Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language