- midday.
- twelve o'clock in the daytime.
- the highest, brightest, or finest point or part: the noon of one's career.
- midnight: the noon of night.
- the middle of the day; 12 o'clock in the daytime or the time or point at which the sun crosses the local meridian
- (as modifier)
- the highest, brightest, or most important part; culmination
