2 definitions
for Mus
From The Collaborative International Dictionary of English v.0.48 :
Mus \Mus\, prop. n.; pl. Mures. [L., a mouse.] (Zool.)
A genus of small rodents, including the common mouse and rat.
[1913 Webster]
From WordNet (r) 2.0 :
Mus
n : type genus of the Muridae: common house mice; upper incisors
have a square-notched tip [syn: genus Mus]