Punic

adjective

1. of ancient Carthage or its people or culture
2. like or characteristic of the Carthaginians, regarded by the Romans as faithless and treacherous

Etymology: L Punicus, earlier Poenicus, Carthaginian, properly Phoenician < Poeni, the Carthaginians < Gr Phoinix, Phoenician

noun

the Semitic language spoken in ancient Carthage, a dialect of Phoenician: it survived until c. 500