Proto-Slavic *tokъ

→ Bulgarian ток (inherited)

→ Czech tok (inherited)

→ Old Church Slavonic токъ (inherited)

→ Macedonian ток (inherited)

→ Polish tok (inherited)

→ Russian ток (inherited)

→ Serbo-Croatian tok (inherited)

→ Serbo-Croatian ток (inherited)

→ Slovak tok (inherited)

→ Slovene tok (inherited)