Why is the ninth month called September?
destroying angel of the bottomless pit (a name sometimes given to the Devil), late 14c., from present participle of Greek apollyein "to destroy utterly" (from apo- "from, away from" + olluein "to destroy"); a translation of Hebrew Abaddon (q.v.).
destroyer, the name given to the king of the hosts represented by the locusts (Rev. 9:11). It is the Greek translation of the Hebrew Abaddon (q.v.).