File:Briganti 1862 from Bisaccia.jpg Banditry wani nau'in laifi ne da aka shirya ta hanyar aikata laifuka da suka shafi barazana ko amfani da tashin hankali . Mutumin da ya shiga aikin 'yan fashi an san shi da ɗan fashi kuma da farko yana aikata laifuka kamar ƙwace, fashi, da kisan kai, ko dai a matsayin mutum ɗaya ko cikin ƙungiyoyi. Banditry ra'ayi ne mara ma'ana game da aikata laifi kuma a cikin amfani na zamani na iya zama daidai da ƙungiya -ƙungiya, ɓarayi, ɓarayi, da ɓarayi . Kalmar ɗan fashi (wanda aka gabatar da Ingilishi ta hanyar Italiyanci kusan 1590) ya samo asali ne daga farkon aikin shari'ar Jamus na haramtattun masu laifi, wanda ake kira *bannan ( haramcin Ingilishi). Kalmar doka a Daular Roman Mai Tsarki ita ce Acht ko Reichsacht, wanda aka fassara shi da " haramtacciyar sarauta ".[ana buƙatar hujja] A cikin Italiyanci na zamani kalmar daidai "bandito" a zahiri tana nufin haramtacce ko wanda aka hana. The New English Dictionary kan Historical Principles (Ned) ayyana "ɗan fashi" a 1885 a matsayin "wanda aka proscribed ko haramta .