Variant spelling or dialect form possibly meaning cracked, broken, or unstable; archaic or dialectal.
An archaic or non-standard variant, possibly related to 'crazy' or 'craze' (cracked glaze in pottery), though the exact genealogy is unclear. This appears to be a minor spelling variant from regional English.
The word 'craze' comes from pottery—a crazing is when glazed ceramic develops tiny cracks—and this shows how technical vocabularies from old trades become part of casual speech, with 'craisey' possibly preserving an older form.
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