Where does “furna” come from?

furna (Portuguese) comes from Latin furnus, from Proto-Italic fornos, from Proto-Indo-European gʷʰr̥-nós, from Indo-European *gʷʰer-.

furna (Portuguese): cave, cavern; crater

Definitions

  1. cave, cavern; crater

Ancestry of “furna”, step by step

StepLanguageWordMeaning
1Latinfurnusoven; bakery
2Proto-Italicfornos—
3Proto-Indo-Europeangʷʰr̥-nós—
4Indo-European*gʷʰer-—
Every word from Indo-European *gʷʰer- →Every word from Proto-Indo-European gʷʰr̥-nós →Every word from Proto-Italic fornos →