Person 'owned' by another (5)
I believe the answer is:
slave
'person owned by another' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for slave that I've seen before include "Person who is the property of another" , "Forced labourer" , "Bondsman, thrall" , "Work excessively hard" , "One in bondage" .)