/ Dictionary / Index C Cornwall: Meaning and Definition of Find definitions for: Corn•wall Pronunciation: (kôrn'wôl or, esp. Brit., -wul), [key] — n. a county in SW England. 397,200; 1369 sq. mi. (3545 sq. km). a city in SE Ontario, in S Canada, SW of Ottawa, on the St. Lawrence. 46,144. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cornwall (Thesaurus) cornuto Cornwallis Related Content Daily Word Quiz: wary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language