Top definition
When someone makes a crossover fanfiction story, using an OC based off of one thing and crossing it with something else.

I.E. a 1/4 fic. Only using 1/4 of the story to cross with something else
A story featuring Edward's (Or Jacob's) and Bellsa's child (From Twilight) going to Hogwarts and meeting Harry Potter. (Harry Potter Series) is A Fourth Fiction.
by Deadlydoom September 19, 2010
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