Proto-Indo-European *ḱerh₂s-

→ English harns (mention)

→ Bulgarian стършел (derived)

→ Czech sršeň (derived)

→ Danish hjerne (derived)

→ German Hirn (derived)

→ German Hornisse (derived)

→ Spanish cerebro (derived)

→ Icelandic hjarni (derived)

→ Italian cerebro (derived)

→ Lithuanian širšė (derived)

→ Dutch hoorntje (derived)

→ Old Norse hjarni (derived)

→ Polish szerszeń (mention)

→ Serbo-Croatian stršljen (mention)

→ Serbo-Croatian стршљен (mention)

→ Slovene sršen (derived)

→ Old Polish sierszeń (derived)