Merriam-Webster's Collegiate® Dictionary, 11th Edition
ADVANTAGE
I. noun
Etymology: Middle English avantage, from Anglo-French, from avant before, from Late Latin abante
Date: 1523
superiority of position or condition , a factor or circumstance of benefit to its possessor ,
3. benefit , gain , interest 2a, the first point won in tennis after deuce,
II. transitive verb (-taged; -taging)
Date: 1549
to give an advantage to ; benefit