- The youngest member of a family or group
- (baby) pamper: treat with excessive indulgence; "grandparents often pamper the children"; "Let's not mollycoddle our students!"
- A young or newly born animal
- A very young child, esp. one newly or recently born
- (baby) the youngest member of a group (not necessarily young); "the baby of the family"; "the baby of the Supreme Court"
- (baby) a very young child (birth to 1 year) who has not yet begun to walk or talk; "the baby began to cry again"; "she held the baby in her arms"; "it sounds simple, but when you have your own baby it is all so different"