Source : Webster's Revised Unabridged Dictionary (1913)

Owner \Own"er\, n.
   One who owns; a rightful proprietor; one who has the legal or
   rightful title, whether he is the possessor or not. --Shak.

Source : WordNet®

owner
     n 1: (law) someone who owns (is legal possessor of) a business;
          "he is the owner of a chain of restaurants" [syn: {proprietor}]
     2: a person who owns something; "they are searching for the
        owner of the car"; "who is the owner of that friendly
        smile?" [syn: {possessor}]