One who has power and authority; a master; a ruler; a governor; a prince; a proprietor, as of a manor.
source: Webster 1913
verb
make a lord of someone
source: WordNet 3.0
To invest with the dignity, power, and privileges of a lord.
source: Webster 1913
To play the lord; to domineer; to rule with arbitrary or despotic sway; -- sometimes with over; and sometimes with it in the manner of a transitive verb.