blackshirtPronunciation: /ˈblakʃəːt/Definition of blackshirt noun a member of a Fascist organization, in particular: (in Italy) a member of a paramilitary group founded by Mussolini. (in Nazi Germany) a member of the SS. (in the UK) a supporter of Oswald Mosley’s British Union of Fascists. Origin: 1920s: so named because of the colour of the Italian Fascist uniformblackshirt in other Oxford dictionaries Definition of blackshirt in the US English dictionary
