What is the meaning of Vosu?

accusative singular of vosa

Second-person plural possessive determiner; your

Second-person plural possessive pronoun; yours

girl, broad, chick

slut

Eeva Pohjola (2018) 'Tyttöä' merkitsevät slangisanat Urbaanissa sanakirjassa, University of Oulu, page 32

Source: wiktionary.org