baby

A baby is a very young child, less than two years old, who has not yet learned how to speak.

Example: I used to be a baby but now I am an adult.

A baby is a young animal.

Example: A baby cat is called a kitten.

If you baby someone, you treat them like a baby; you treat them gently and pamper them.

Example: Mom, don't baby me - I can do it myself!