Russian ось

← English OS (link)

← Proto-Indo-European *h₂eḱs- (root)

← Old East Slavic ось (inherited)

← Proto-Slavic *osь (inherited)

→ English axle (cognate)

→ Lower Sorbian wós (cognate)

→ Macedonian оска (cognate)

→ Dutch oksel (cognate)

→ Romanian osie (cognate)

→ Russian осевой (affix)

→ Russian полуось (affix)

→ Ukrainian вічко (mention)