Source : Webster's Revised Unabridged Dictionary (1913)

Beggar \Beg"gar\, n. [OE. beggere, fr. beg.]
   1. One who begs; one who asks or entreats earnestly, or with
      humility; a petitioner.

   2. One who makes it his business to ask alms.

   3. One who is dependent upon others for support; -- a
      contemptuous or sarcastic use.

   4. One who assumes in argument what he does not prove. --Abp.
      Tillotson.

Beggar \Beg"gar\, v. t. [imp. & p. p. {Beggared}; p. pr. & vb.
   n. {Beggaring}.]
   1. To reduce to beggary; to impoverish; as, he had beggared
      himself. --Milton.

   2. To cause to seem very poor and inadequate.

            It beggared all description.          --Shak.

Source : WordNet®

beggar
     n : a pauper who lives by begging [syn: {mendicant}]

beggar
     v 1: be beyond the resources of; "This beggars description!"
     2: reduce to beggary [syn: {pauperize}, {pauperise}]