An obsolete or dialectal plural form of 'eve', used in Middle English texts to refer to multiple evenings or nights before events.
From Old English 'æfen' plus Middle English plural '-es/-se' (standard pluralization before 's' became dominant). This form appears in medieval and early modern texts before standardization.
Before English settled on 'eves' as the plural of 'eve', writers used 'evese' and other variants—this word is basically a historical artifact of how English plurals evolved!
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