/ Dictionary / Index R Rigel: Meaning and Definition of Find definitions for: Ri•gel Pronunciation: (rī'jul, -gul), [key] — n. Astron. a first-magnitude star in the constellation Orion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rigel (Thesaurus) rigaudon Rigel Kentaurus Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language