/ Dictionary / Index R Richelieu: Meaning and Definition of Find definitions for: Rich•e•lieu Pronunciation: (rish'u-l" Fr. rēsh&supschwa-lyœ'), [key] — n. 1585–1642, French cardinal and statesman. a river in SE Canada, in Quebec, flowing N from Lake Champlain to the St. Lawrence. 210 mi. (340 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: richelieu (Thesaurus) Richardson ground squirrel richen Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language