(noun) A very young human, particularly from birth to a couple of years old or until walking is fully mastered.
"I learned to walk as a baby and I haven't had a lesson since."
"Conservatives want live babies so they can train them to be dead soldiers."
"I personally always find something really scary about watching little girls learning to manipulate their dads by baby talking. Then they grow up and use the same technique on their boyfriends or husbands. That scares me because it's just so sick on so many levels."