User blog comment:IamJakuhoRaikoben/Chapter 244: Thunder Crashes, Review./@comment-16344653-20110723203519/@comment-3290324-20110724054945

Plot Armor has multiple definitions and can be used in multiple ways. In this instance Plot Armor is B j's definition. Though, the definition you provided is also Plot Armor. For example, if the Straw Hat Pirates were to fight Whitebeard, Crocodile, Boa, Garp, Sengoku, Aokiji, Kizaru, Akainu, Blackbeard, Donflamingo, Shanks, and Dracule Mihawk, at one time and somehow manage to live afterwards, that would fit your desrciption. A simpler definition would be whenever the mangaka pulls a win out of his ass hole to let the protagonists win and/or live.

Synonyms include: Plot Magic, Plot Koi, Nakama Magic, Plot Hole (somewhat), the list goes on and on.