Where does “copaço” come from?
copaço (Portuguese) comes from Portuguese aço, from Old Portuguese açeyro, from Late Latin aciarium, from Latin aciēs, from Latin aceō, from Proto-Italic akēō, from Proto-Indo-European h₂eḱ-éh₁-ye-ti, from Proto-Indo-European h₂eḱ- — sharp.
copaço (Portuguese): A big cup or glass
Ancestry of “copaço”, step by step