/ Dictionary / Index R roadrunner: Meaning and Definition of Find definitions for: road•run•ner Pronunciation: (rōd'run"ur), [key] — n. either of two large terrestrial cuckoos of the genus Geococcyx of arid regions of the western U.S., Mexico, and Central America, esp. G. californianusAlso called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: roadrunner (Thesaurus) road roller road show Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language