"Half" refers to one of two equal parts of a whole. When something is divided into two equal sections, each section is called a half. For example, if you cut a pizza into two equal slices, each slice represents half of the entire pizza. In mathematics, half is often represented as the fraction 1/2. This means that if you have a total of 10 items, half would be 5 items. The concept of half is commonly used in everyday life, such as sharing food, measuring ingredients, or dividing time.