Nouns

(n)Achaean, Achaiana member of one of four linguistic divisions of the prehistoric Greeks, spoken on the Greek mainland, Crete and Cyprus in the 16th to 12th centuries BC
(n)Achaean, Arcado-Cypriansthe ancient Greek inhabitants of Achaea

Adjectives

(a)Achaeanof or relating to Achaea or its ancient Greek people