Ma'anar ƙamus na kalmar "mizzenmast" ita ce ta uku kuma mafi girma a kan jirgin ruwa, wanda ke bayan babban mashigin kuma gaba da tashar jirgin ruwa. Yawancin lokaci yana ɗaukar ƙaramin jirgin ruwa mai suna mizzen sail, kuma ana amfani dashi don taimakawa wajen sarrafa alkibla da saurin jirgin. Kalmar "mizzenmast" ta fito ne daga kalmar Ingilishi ta tsakiya "mesan" wanda ke nufin "tsakiyar" da "mast", yana nuna matsayinsa a kan jirgin.