/ Dictionary / Index O orlfly: Meaning and Definition of Find definitions for: orl•fly Pronunciation: (ôrl'flī"), [key] — pl. -flies. an alderfly, Sialis lutaria. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Orléans, d' Orlich 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