Proto-Slavic *kǫkolъ

→ Belarusian куколь (mention)

→ Czech koukol (mention)

→ Lower Sorbian kukel (mention)

→ Upper Sorbian kukel (mention)

→ Russian куколь (mention)

→ Serbo-Croatian kukolj (inherited)

→ Serbo-Croatian кукољ (inherited)

→ Slovak kúkoľ (mention)

→ Slovene kokalj (mention)

→ Slovene kokolj (mention)

→ Ukrainian кукіль (mention)