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Webster 1913 Edition
Administrator
Ad-minˊis-tra′tor
,Noun.
 [L.] 
1. 
One who administers affairs; one who directs, manages, executes, or dispenses, whether in civil, judicial, political, or ecclesiastical affairs; a manager. 
2. 
(Law) 
A man who manages or settles the estate of an intestate, or of a testator when there is no competent executor; one to whom the right of administration has been committed by competent authority. 
Webster 1828 Edition
Administrator
ADMINISTRA'TOR
,Noun.
  1.
  a man who, by virtue of a commission from the Ordinary, Surrogate, Court of Probate, or other proper authority, has the charge of the goods and estate of one dying without a will.2.
  One who administers, or who directs, manages, distributes, or dispenses laws and rites, either in civil, judicial, political, or ecclesiastical affairs.3.
  In Scots law, a tutor, curator or guardian, having the care of one who is incapable of acting for himself.  The term is usually applied to a father who has power over his children and their estate, during their minority.