1) Any of numerous small Old World rodents of the family Muridae, especially of
the genus Mus, introduced widely in other parts of the world.
M.E. mous (plural mis), from O.E. mus "small rodent;" cf. O.N., O.Fr., M.Du., Dan., Sw. mus, Du. muis, Ger. Maus, Pers. muš, as below.
Muš "mouse," dialectal Lori, Laki miš; Mid.Pers. mušk; cf. Skt. muš-, muš-; Gk. mys; L. mus; O.E. mys; Ger. Maus.