If this file is part of a specific project, game mod, or data dump you found, here are a few likely possibilities:
It could be a collection of text files or logs related to a specific topic (like the "morass of misconceptions" in educational research).
In some online communities or "ARG" (Alternate Reality Games), files with misspelled names like "morrass" are used as puzzles containing hidden text or Morse code.
Convert Text to Morse Code - Online Text Tools