Any very young animal, especially a vertebrate; many species have specific names for their babies, such as kittens for the babies of cats, puppies for the babies of dogs, and chicks for the babies of birds. See for more
A very young human, from birth to a couple of years old or until walking is fully mastered
sometimes used as a term of address for attractive young women the youngest member of a group (not necessarily young); "the baby of the family"; "the baby of the Supreme Court"
Of a child: very young; of the age when he or she would be termed a baby or infant
Some people use baby as an affectionate way of addressing someone, especially a young woman, or referring to them. You have to wake up now, baby = love. babied babying babies to be too kind to someone and look after them as if they were a baby. baby boom Baby Yar baby's breath
Baby vegetables are vegetables picked when they are very small. Serve with baby new potatoes