Abaddon

Abaddon \A*bad"don\ ([.a]*b[a^]d"d[u^]n), n. [Heb. [=a]badd[=o]n
   destruction, abyss, fr. [=a]bad to be lost, to perish.]
   1. The destroyer, or angel of the bottomless pit; -- the same
      as Apollyon and Asmodeus.
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   2. Hell; the bottomless pit. [Poetic]
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            In all her gates, Abaddon rues
            Thy bold attempt.                     --Milton.
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