köken: Etymology tree Proto-Indo-European *ǵʰeh₂-der. Ancient Greek χαῦνος (khaûnos) Ancient Greek χάος (kháos)der. Dutch gasbor. French gazbor. Polish gaz Proto-Indo-European *-eykos Proto-Balto-Slavic *-eikas Proto-Slavic *-ikъ Old Polish -ik Polish -ik Polish gazik From gaz + -ik.