A cewar ƙamus, "harbin harsashi" yana nufin nau'in harsashi da ake amfani da shi a cikin manyan bindigogi wanda ya ƙunshi calo na ƙarfe ko kwandon da ke cike da ƙananan majigi kamar ƙwallon dalma ko guntun ƙarfe, wanda aka ƙera don fashewa a tsakiyar iska da watsawa majigi a kan faffadan yanki. An saba amfani da shi wajen yaƙi a ƙarni na 19.
