Where does “kéfich” come from?

kéfich (Kashubian) comes from German Käfig, from Middle High German kevje, from Old High German chevia, from Latin cavea, from Latin cavus, from Proto-Italic kawos, from Proto-Indo-European ḱowh₁ós, from Proto-Indo-European ḱewh₁- — to swell; to be strong.

Ancestry of “kéfich”, step by step

StepLanguageWordMeaning
1GermanKäfigcage
2Middle High Germankevje
3Old High Germancheviacave; cage
4Latincaveahollow, cavity; cage, den, enclosure, stall,...
5Latincavushollow, concave; excavated, channeled;...
6Proto-Italickawos
7Proto-Indo-Europeanḱowh₁óshollow
8Proto-Indo-Europeanḱewh₁-to swell; to be strong
Every word from Proto-Indo-European ḱewh₁-Every word from Proto-Indo-European ḱowh₁ósEvery word from Proto-Italic kawos