Where does “casal” come from?

casal (Old Portuguese) comes from Late Latin casale, from Latin casa, from Proto-Indo-European kat- — cub; to weave, to braid; to link or weave...

Ancestry of “casal”, step by step

Step	Language	Word	Meaning
1	Late Latin	casale	country house, farm; nominative neuter singular...
2	Latin	casa	hut, cottage, cabin; rural property, small farm;...
3	Proto-Indo-European	kat-	cub; to weave, to braid; to link or weave...

casal — Etymology, Origin & Word History | Etymology Explorer