Child (noun)

1. A young human being below the age of puberty.
2. A son or daughter of any age.
3. A person or thing that is like a child in innocence, lack of experience or understanding.

Origin:

Middle english 'child' from old english 'cild' meaning a baby or young person.

Examples:

1. The child is playing.
2. She is the mother of three children.
3. He is still a child at heart.
4. The company is the child of the parent company.
5. The painting is the child of the artist.