undern(Noun)

The third ecclesiastical hour of the day, at around nine o'clock in the morning; tierce.

undern(Noun)

The sixth hour of the day; midday.

undern(Noun)

The late afternoon; the evening.

Undern(noun)

the time between; the time between sunrise and noon; specifically, the third hour of the day, or nine o'clock in the morning, according to ancient reckoning; hence, mealtime, because formerly the principal meal was eaten at that hour; also, later, the afternoon; the time between dinner and supper