What is the meaning of Savo?

salvation, salvage

Savo Finnish, Savonian (dialect of Finnish spoken in Savo)

knowledge

reflexive possessive pronoun; belonging to the subject of the sentence (regardless of gender or number)

Smoczyński, Wojciech (2007) “sãvas”, in Słownik etymologiczny je̜zyka litewskiego (in Polish), Vilnius: Uniwersytet Wileński, page 1551

singular masculine genitive of savas

Source: wiktionary.org