A child by her mother's side

A child and his mother in art

Pictures of a child from the late 19th century

A child (the plural is children) is a person below the age of puberty (biologically) or, at least in English-speaking countries, below the age of majority or in other contexts below the age of consent, of marriage and to drink/buy alcohol (legally). A person can be called his or her parent's child, no matter how old he or she is. Another word for "child" is "kid".