Definition of undern
1 dialectal : the time from noon to sundown : afternoon
2 dialectal : a light meal in the forenoon or in the afternoon
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Origin and Etymology of undern
Middle English, third hour of the morning (9:00 a.m.), noon, from Old English; akin to Old High German untarn, untorn noon, Old Norse undorn midafternoon, midmorning, Gothic undaurnimats noon meal, and probably to Old High German untar between, among — more at inter-
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