An alternative or variant spelling of 'haul' or a regional/dialectal term (extremely rare and possibly non-standard).
This appears to be either a very rare variant, a regional dialect word, or possibly a misrecording; it lacks clear etymological documentation in standard dictionaries.
Some words are so obscure they barely appear in any historical records—'haleru' might be one of those phantom words, a spelling variant that existed once or twice but never quite caught on in English.
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