Where does “arado” come from?
arado (Galician) comes from Old Portuguese arado, from Latin arātrum, from Proto-Indo-European h₂érh₃trom, from Proto-Indo-European h₂erh₃-, from Proto-Indo-European h₁er- — earth.
arado (Galician): plough; the Big Dipper
Ancestry of “arado”, step by step