I can't find "fratures" in a dictionary. Does this word exist?

While proofreading the opensource strategy game "The Battle for Wesnoth" I have encountered a word I can’t find in any dictionary: "fratures". This could be a misspelling but it could also be a very obscure word. The lore of Wesnoth does pride itself on occasionally using obscure words.

I have searched in the following dictionaries:

• https://www.dictionary.com/misspelling?term=fratures&s=t
• https://www.thefreedictionary.com/fratures
• https://dictionary.cambridge.org/search/direct/?datasetsearch=%24preferredDatasets%5B0%5D&q=fratures
• https://www.vocabulary.com/dictionary/fratures
• https://en.wiktionary.org/w/index.php?search=fratures&title=Special:Search&profile=advanced&fulltext=1&searchengineselect=mediawiki&advancedSearch-current=%7B%7D&ns0=1 does have a page with that name but it seems unrelated: a Portuguese verb.

I have encountered this word in the following context (emphasis mine):

The necrophage, or ‘devourer of the dead’, is a monstrous, corpulent
thing, which bears only a crude resemblance to a man. They appear to
be quite rotten in spite of their ability to move; they are rife with
disease and poisons of the blood, and have a stench to match. But the
most revolting fact about these fratures, apparent only to those who
can perceive the traces of foul magic on them, is that they were
somehow made from living men — a process about which almost nothing is
known, but which can be nothing but nightmarish.

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