Midday (noun)

1. The middle of the day, typically 12:00 PM.
2. The time of day when the sun is at its highest point in the sky.

Origin:

Old english middæg (in the sense "middle of the day"), from middan "middle" + dæg "day".

Examples:

1. Midday is the hottest time of the day.
2. Midday is the time when people usually take a lunch break.
3. I usually feel tired around midday.
4. The sun was shining brightly at midday.
5. Midday is the ideal time to take a nap.