Source : Webster's Revised Unabridged Dictionary (1913)

Belial \Be"li*al\, n. [Heb. beli ya'al; beli without + ya'al
   profit.]
   An evil spirit; a wicked and unprincipled person; the
   personification of evil.

         What concord hath Christ with Belia ?    --2 Cor. vi.
                                                  15.

   {A son} (or man) {of Belial}, a worthless, wicked, or
      thoroughly depraved person. --1 Sam. ii. 12.