Possible Definitions:
1. Baby (n.) An infant or young child of either sex; a babe.
2. Baby (n.) A small image of an infant; a doll.
3. Baby (a.) Pertaining to, or resembling, an infant; young or little; as, baby swans.
4. Baby (v. i.) To treat like a young child; to keep dependent; to humor; to fondle.