bai·liff /ˈbeləf/
  執行官,法庭監守,鎮長
  Bail·iff n.
  1. Originally, a person put in charge of something; especially, a chief officer, magistrate, or keeper, as of a county, town, hundred, or castle; one to whom powers of custody or care are intrusted.
     Lausanne is under the canton of Berne, governed by a bailiff sent every three years from the senate.   --Addison.
  2. Eng. Law A sheriff's deputy, appointed to make arrests, collect fines, summon juries, etc.
  Note: ☞ In American law the term bailiff is seldom used except sometimes to signify a sheriff's officer or constable, or a party liable to account to another for the rent and profits of real estate.
  3. An overseer or under steward of an estate, who directs husbandry operations, collects rents, etc. [Eng.]
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  bailiff
       n : an officer of the court who is employed to execute writs and
           processes and make arrests etc.