Inzu yo kuvusha umwotsi ni inyubako ifunze aho ibicuruzwa bishyirwa mu mwotsi w'ibiti kugira ngo bibikwe, bihabwe uburyohe cyangwa bikomezwe. Ikoreshwa mu kuvusha umwotsi inyama, amafi n'ifoma, kandi mu gukora urubereti mu kugumisha no gukamya amapapuro y'amata y'umuhati. Kugenzura ubushyuhe n'ihinduranya ry'umwuka bigena niba ari umwotsi ukonje (munsi ya 30 °C) cyangwa umwotsi ushyushye (60-80 °C).