A "5-year-old" is a child who is five years old, typically in the early stages of childhood development. At this age, children are often curious and eager to learn about the world around them. They usually attend preschool or kindergarten, where they begin to develop social skills and basic academic knowledge, such as numbers and letters. Physically, a 5-year-old is usually more coordinated than younger children and enjoys activities like running, jumping, and playing games. They often engage in imaginative play, using toys like action figures or dolls to create stories. This age is also marked by the development of friendships and a growing sense of independence.