Ancient serf (5)
I believe the answer is:
helot
'ancient serf' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for helot that I've seen before include "Hotel (anag) - serf" , "downtrodden?" , "Serf of ancient Sparta" , "Greek serf" , "He's bound to land" .)