[nuclear primary] The Tsetse was a small American nuclear bomb developed in the 1950s that was used as the `primary` in several US thermonuclear bombs and as a small stand-alone weapon of its own. Primary is the technical term for the fission bomb component of a fusion bomb, used to start the reactions and implode and detonate the second, f... Found on http://en.wikipedia.org/wiki/Tsetse_(nuclear_primary)
• (n.) A venomous two-winged African fly (Glossina morsitans) whose bite is very poisonous, and even fatal, to horses and cattle, but harmless to men. It renders extensive districts in which it abounds uninhabitable during certain seasons of the year. Found on http://thinkexist.com/dictionary/meaning/tsetse/
The Tsetse (Glossina) is a genus of two winged brown and yellow flies found in Africa that carries the Trypanosome parasite which causes sleeping sickness. Found on http://www.probertencyclopaedia.com/browse/BT.HTM