Wordnet 3.0
NOUN (2)
1. 
 the person who Jesus raised from the dead after four days in the tomb; 
 this miracle caused the enemies of Jesus to begin the plan to put him to death; 
2. 
 the diseased beggar in Jesus' parable of the rich man and the beggar; 
WordNet (r) 3.0 (2006):
Lazarus
    n 1: the person who Jesus raised from the dead after four days
         in the tomb; this miracle caused the enemies of Jesus to
         begin the plan to put him to death
    2: the diseased beggar in Jesus' parable of the rich man and the
       beggar
Easton's 1897 Bible Dictionary:
Lazarus
   an abbreviation of Eleazar, whom God helps. (1.) The brother of
   Mary and Martha of Bethany. He was raised from the dead after he
   had lain four days in the tomb (John 11:1-44). This miracle so
   excited the wrath of the Jews that they sought to put both Jesus
   and Lazarus to death.
     (2.) A beggar named in the parable recorded Luke 16:19-31.
Hitchcock's Bible Names Dictionary (late 1800's):
Lazarus, assistance of God