n Any condition, circumstance, opportunity or means, particularly favorable to success, or to any desired end.
n Superiority; mastery; — used with of to specify its nature or with over to specify the other party.
n Superiority of state, or that which gives it; benefit; gain; profit; as, the advantage of a good constitution.
n (tennis) The score where one player wins a point after deuce but needs the next too to carry the game.
n (soccer) The continuation of the game after a foul against the attacking team, because the attacking team are in a advantageous position.
v (reflexive) To do something for one's own benefit; to take advantage (term|of). (defdate|from 16th c.)