A very rare or obsolete plural form, possibly referring to multiple instances of 'caccia' or a variant dialectal term with unclear modern usage.
Likely an Italian or Romance language plural form related to 'caccia,' though this particular form is so archaic that its exact etymology and usage are difficult to verify in modern linguistic resources.
Some words are so old and obscure that even linguists have to scratch their heads—'cacei' might be a ghost word that survived in only a handful of medieval manuscripts.
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