/ Dictionary / Index T Thun: Meaning and Definition of Find definitions for: Thun Pronunciation: (tn), [key] — n. a city in central Switzerland, on the Aar River, near the Lake of Thun. 36,765. German,a lake in central Switzerland, formed by a widening in the course of the Aar River. 10 mi. (16 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thumping thunbergia Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language