/ Dictionary / Index T tsetse fly: Meaning and Definition of Find definitions for: tset'se fly" Pronunciation: (tset'sē, tet'-, tsē'tsē, tē'-), [key] any of several bloodsucking African flies of the genus Glossina, that act as a vector of sleeping sickness and other trypanosome infections of humans and domestic animals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Tseng Kuo-fan T.Sgt. Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language