Inherited from Old Galician-Portuguese adega, from earlier abdega, from *abodega, from Latin apothēca, from Ancient Greek ἀποθήκη (apothḗkē, “storehouse”). Cognate with Galician adega. Doublet of apoteca, bodega, botica, and butique.
Practice speaking and memorizing "adega" and many other words and sentences in Portuguese.