Where does “cozinnar” come from?

cozinnar (Old Portuguese) comes from Latin cocīnāre, from Latin coquīnāre.

Ancestry of “cozinnar”, step by step

Step	Language	Word	Meaning
1	Latin	cocīnāre	—
2	Latin	coquīnāre	—

cozinnar — Etymology, Origin & Word History | Etymology Explorer