1. a doll, esp. one resembling a human baby.
2. Often, baby dolls. Also called ba'by doll" night'gown, ba'by doll" paja'mas. a garment for women or girls consisting of a hip-length top of delicate fabric often decorated with ruffles, ribbons, or lace, with a matching panty, worn for sleeping.
3. a short dress styled to resemble this. Also,ba'by•doll"(for defs. 2, 3).