Noun
muso (plural musos)
(UK, Australia, informal) Diminutive of musician.
Impersonal subjects are not used: pluvas (it is raining); estas muso en la domo (there's a mouse in the house). Source: Internet
MUSO: Nic Price is preparing for his Foo Fighters debut. Source: Internet
For example, the word muso main "mouse" has acquired the meaning of a computer mouse from its usage in English. Source: Internet