noon

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Twelve o'clock in the daytime; midday.
2. n. The time or point in the sun's path at which the sun is on the local meridian. Also called noontide, noontime.
3. n. The highest point; the zenith.
4. n. Archaic Midnight.

Century Dictionary and Cyclopedia

1. n. The ninth hour of the day according to Roman and ecclesiastical reckoning, namely the ninth hour from sunrise, or the middle hour between midday and sunset—that is, about 3 p. m.; later, the ecclesiastical hour of nones, at any time from midday till the ninth hour.
2. n. Midday; the time when the sun is in the meridian; twelve o'clock in the daytime.
3. n. The middle or culminating point of any course; the time of greatest brilliancy or power; the prime.
4. n. plural The noonday meal. Compare nones, 2.
5. Meridional.
6. To rest at noon or during the warm part of the day.
7. A Middle English form of none.

Wiktionary

1. n. The ninth hour of the day counted from sunrise; around three o'clock in the afternoon.
2. n. Time of day when the sun is in its zenith; twelve o'clock in the day, midday.
3. n. The corresponding time in the middle of the night; midnight.
4. no (not any)

GNU Webster's 1913

1. adj. No. See the Note under No.
2. n. The middle of the day; midday; the time when the sun is in the meridian; twelve o'clock in the daytime.
3. n. Hence, the highest point; culmination.
4. adj. Belonging to midday; occurring at midday; meridional.
5. v. To take rest and refreshment at noon.

WordNet 3.0

1. n. the middle of the day