rye (grass or its grains as food)
From Old Galician-Portuguese centẽo (“rye”), from Latin centēnus (“a hundred things”), from Latin centum (“a hundred”), from Proto-Indo-European *ḱm̥tóm. Cognate with Galician centeo, and Spanish centeno. Doublet of Centeno.
Practice speaking and memorizing "centeio" and many other words and sentences in Portuguese.