A male person having another living being so far subject to
   his will, that he can, in the main, control his or its actions; --
   formerly used with much more extensive application than now. (a) The
   employer of a servant. (b) The owner of a slave. (c) The person to whom
   an apprentice is articled. (d) A sovereign, prince, or feudal noble; a
   chief, or one exercising similar authority. (e) The head of a
   household. (f) The male head of a school or college. (g) A male
   teacher. (h) The director of a number of persons performing a ceremony
   or sharing a feast. (i) The owner of a docile brute, -- especially a
   dog or horse. (j) The controller of a familiar spirit or other
   supernatural being.