Not a standard English word; appears to be a non-standard or archaic past tense or past participle form.
If archaic, possibly from berake (itself archaic) + -ed ending, but both forms lack documentation in standard dictionaries.
When you see double past-tense markers like -ed on a questionable root, it's usually a sign that English's grammar regularization is catching up—old irregular verbs turning into regular ones.
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