The term 'OLD GREEK SERF' can be summarized as a HELOT, which is a five-letter word. Helots were an enslaved population in ancient Greece, typically of non-Greek origin, who were bound to the land and owned by their masters. They were required to pay a portion of their produce to their masters and were not allowed to leave the land without permission. Helots were also subject to military conscription and could be killed at any time by their masters.