UziPronunciation: /ˈuːzi/Definition of Uzi noun a type of sub-machine gun of Israeli design: both of them were armed, one with what appeared to be an Uzi [as modifier]:he opened fire with a Uzi sub-machine gunOrigin: 1950s: from Uziel Gal (1923–2002), the Israeli army officer who designed itUzi in other Oxford dictionaries Definition of Uzi in the US English dictionary