The kanji 午 primarily represents "noon" or "the seventh sign of the zodiac" (corresponding to the horse). It signifies the time when the sun is at its highest point in the sky, specifically midday. It also has associations with the direction of south.

・On-yomi (音読み): ゴ (go) ・Kun-yomi (訓読み): うま (uma) - horse, used in the zodiac context.

⚫︎ 午前 Translation: A.M. (ante meridiem - before noon) ⚫︎ 正午 Translation: Noon, midday ⚫︎ 午年 Translation: The year of the Horse (in the Chinese zodiac)

The kanji 午 is a pictograph. It depicts a pestle (a tool used for grinding grains) or a mortar, representing the middle part of the day, when work was typically paused. Over time, the form evolved to its current shape. The character also came to represent the seventh of the twelve earthly branches in the Chinese zodiac, associated with the horse.