#slave  a person who is owned by someone
  supertype:  person__individual__someone__somebody__mortal__human__human_being__humanbeing__soul  a human being; "there was too much for one person to do"
  instance:  Dred_Scott  Nat_Turner  Denmark_Vesey
  subtype:  bondman__bondsman  a male slave
  subtype:  bondwoman__bondswoman__bondmaid  a female slave
  subtype:  bond_servant  someone bound to labor without wages
     subtype:  bondman.bond_servant__bondsman  a male bound to serve without wages
     subtype:  bondswoman__bondwoman__bondmaid  a female bound to serve without wages
     subtype:  thrall  someone held in bondage
        subtype:  serf__helot__villein  (medieval Europe) a person who is bound to the land and owned by the feudal lord
           subtype:  cottier__cotter  a medieval English villein
  subtype:  creature__tool__puppet  a person who is used to perform unpleasant or dishonest tasks for someone else
  subtype:  galley_slave  a slave condemned to row in a galley

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