1. [n]  a dissolute person; usually a man who is morally unrestrained
2. [adj]  unrestrained by convention or morality; "Congreve draws a debauched aristocratic society"; "deplorably dissipated and degraded"; "riotous living"; "fast women"

1. \Lib"er*tine\ (-t[i^]n), n. [L. libertinus freedman,
   from libertus one made free, fr. liber free: cf. F. libertin.
   See {Liberal}.]
   1. (Rom. Antiq.) A manumitted slave; a freedman; also, the
      son of a freedman.
   2. (Eccl. Hist.) One of a sect of Anabaptists, in the
      fifteenth and early part of the sixteenth century, who
      rejected many of the customs and decencies of life, and
      advocated a community of goods and of women.
   3. One free from restraint; one who acts according to his
      impulses and desires; now, specifically, one who gives
      rein to lust; a rake; a debauchee.
            Like a puffed and reckless libertine, Himself the
            primrose path of dalliance treads.    --Shak.
   4. A defamatory name for a freethinker. [Obsoles.]
   

2. \Lib"er*tine\, a. [L. libertinus of a freedman: cf. F.
   libertin. See {Libertine}, n. ]
   1. Free from restraint; uncontrolled. [Obs.]
            You are too much libertine.           --Beau. & Fl.
   2. Dissolute; licentious; profligate; loose in morals; as,
      libertine principles or manners. --Bacon.
   

found only Acts 6:9, one who once had been a slave, but who had been set at liberty, or the child of such a person. In this case the name probably denotes those descendants of Jews who had been carried captives to Rome as prisoners of war by Pompey and other Roman generals in the Syrian wars, and had afterwards been liberated. In A.D. 19 these manumitted Jews were banished from Rome. Many of them found their way to Jerusalem, and there established a synagogue.