from G1210; a slave (literal or figurative, involuntary or voluntary; frequently, therefore in a qualified sense of subjection or subserviency):--bond(-man), servant.
a slave, bondman, man of servile condition
a slave
metaph., one who gives himself up to another's will those whose service is used by Christ in extending and advancing his cause among men
devoted to another to the disregard of one's own interests