Where does “ffyrnic” come from?

ffyrnic (Middle Welsh) comes from Proto-Brythonic *förnɨg, from Latin fornix, from Latin furnus, from Proto-Italic fornos, from Proto-Indo-European gʷʰr̥-nós, from Indo-European *gʷʰer-.

Ancestry of “ffyrnic”, step by step

StepLanguageWordMeaning
1Proto-Brythonic*förnɨg
2Latinfornixarch, vault; brothel
3Latinfurnusoven; bakery
4Proto-Italicfornos
5Proto-Indo-Europeangʷʰr̥-nós
6Indo-European*gʷʰer-

Words derived from “ffyrnic

Every word from Indo-European *gʷʰer-