Ma’anar ƙamus na “Maganin tsumma” tufa ce da ke rufe al’aurar da maza ko samari ke sawa, musamman a tsakanin wasu ‘yan asalin ƙasar. Yawanci ya ƙunshi wani zane ko ɓoyayyiyar ɓawon kwana huɗu wanda ke wucewa tsakanin ƙafafu kuma a ɗaure a kugu tare da bel ko kirtani. Ƙabilun ƴan asalin Amirka da yawa da sauran ƴan asalin duniya ne suke sawa a tarihi.
