Where does “meato” come from?

meato (Spanish) comes from Latin meatus, from Latin meo, from Latin meus, from Proto-Italic meos — my.

meato (Spanish): meatus

Definitions

Step	Language	Word	Meaning
1	Latin	meatus	movement, course; a path, passage; gone, passed,...
2	Latin	meo	I go along, pass or traverse; dative masculine...
3	Latin	meus	my, mine
4	Proto-Italic	meos	my

meato — Etymology, Origin & Word History | Etymology Explorer