From Ottoman Turkish طاس (tas), which borrowed this from Arabic طَاس (ṭās, “bowl”) (a shortening of طَسْت (ṭast)), from Middle Persian tšt' (tašt), ultimately from the past participle of Proto-Iranian *taš- (“to make, construct; to cut”), from Proto-Indo-European *tetḱ-. Cognate with French tasse.