Constable

n.
  1. A high officer in the monarchical establishments of the Middle Ages.
  2. (Law) An officer of the peace having power as a conservator of the public peace, and bound to execute the warrants of judicial officers.
    3. High constable ,
    a constable having certain duties and powers within a hundred.
    Petty constable ,
    a conservator of the peace within a parish or tithing; a tithingman.
    Special constable ,
    a person appointed to act as constable of special occasions.
    To overrun the constable, or outrun the constable ,
    to spend more than one's income; to get into debt.