Where does “lado” come from?

lado (Galician) comes from Old Portuguese lado, from Latin lātus, from Latin cauda, from Proto-Italic kaudā, from Proto-Indo-European keh₂udeh₂.

lado (Galician): side

Definitions

Step	Language	Word	Meaning
1	Old Portuguese	lado	—
2	Latin	lātus	—
3	Latin	cauda	A tail
4	Proto-Italic	kaudā	tail
5	Proto-Indo-European	keh₂udeh₂	—

lado — Etymology, Origin & Word History | Etymology Explorer