Noon (noun)

1. The middle of the day; 12 o'clock in the daytime.
2. The time when the sun is at its highest point in the sky, typically around 12 o'clock in the daytime.

Origin:

Old english nōn (dative nōne), from latin nona (hora) "ninth (hour)" (of the roman division of the day into twelve hours, regardless of night or day).

Examples:

1. We will meet at noon.
2. The sun was high in the sky at noon.
3. The store closes for lunch at noon.
4. He usually takes a nap at noon.
5. The best time to go for a walk is around noon.