/ Dictionary / Index G Gatun: Meaning and Definition of Find definitions for: Ga•tun Pronunciation: (gä-tn'), [key] — n. a town in the N Canal Zone of Panama. a large dam near this town. 1 mi. (2 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gat-toothed Gatun Lake Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language