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.
Main Entry: tsetse fly Function: noun : any of several dipteran flies of the genus Glossina that occur in sub-Saharan Africa and include vectors of human andanimal trypanosomes (as those causing sleeping sickness and nagana) called also tsetse
tsetse fly tset·se fly or tzet·ze fly (tsět'sē, tsē'tsē) n. Any of several two-winged bloodsucking African flies of the genus Glossina, often carrying and transmitting pathogenic trypanosomes to humans and livestock.