/ Dictionary / Index C Copper River: Meaning and Definition of Find definitions for: Cop'per Riv'er Pronunciation: [key] a stream in S Alaska, flowing through the SE part. 300 mi. (483 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. copper pyrites coppersmith Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language