/ Dictionary / Index T Thames: Meaning and Definition of Find definitions for: Thames Pronunciation: (temz for 1, 2 thāmz, tāmz, temz for 3), [key] a river in S England, flowing E through London to the North Sea. 209 mi. (336 km) long. a river in SE Canada, in Ontario province, flowing SW to Lake St. Clair. 160 mi. (260 km) long. an estuary in SE Connecticut, flowing S past New London to Long Island Sound. 15 mi. (24 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thames (Thesaurus) Thamar thamin Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language