Proto-Slavic *strǫkъ

→ Bulgarian стрък (inherited)

→ Bulgarian стръга (cognate)

→ Czech struk (inherited)

→ Upper Sorbian truk (inherited)

→ Polish strąk (inherited)

→ Russian стручок (inherited)

→ Serbo-Croatian struk (inherited)

→ Serbo-Croatian струк (inherited)

→ Slovak struk (inherited)

→ Slovene strok (inherited)