The Collaborative International Dictionary of English v.0.48:

Baby \Ba"by\ (b[=a]"b[y^]), n.; pl. Babies (-b[i^]z). [Dim. of
   babe.]
   An infant or young child of either sex; a babe.
   [1913 Webster]

   2. A small image of an infant; a doll.
      [1913 Webster]

   Babies in the eyes, the minute reflection which one sees of
      one's self in the eyes of another.
      [1913 Webster]

            She clung about his neck, gave him ten kisses,
            Toyed with his locks, looked babies in his eyes.
                                                  --Heywood.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Baby \Ba"by\, a.
   Pertaining to, or resembling, an infant; young or little; as,
   baby swans. "Baby figure" --Shak.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Baby \Ba"by\, v. t. [imp. & p. p. Babied (b[=a]"b[=e]d); p.
   pr. & vb. n. Babying.]
   To treat like a young child; to keep dependent; to humor; to
   fondle. --Young.
   [1913 Webster]

WordNet (r) 3.0 (2006):

baby
    n 1: 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" [syn: baby, babe,
         infant]
    2: the youngest member of a group (not necessarily young); "the
       baby of the family"; "the baby of the Supreme Court"
    3: an immature childish person; "he remained a child in
       practical matters as long as he lived"; "stop being a baby!"
       [syn: child, baby]
    4: an unborn child; a human fetus; "I felt healthy and very
       feminine carrying the baby"; "it was great to feel my baby
       moving about inside"
    5: (slang) sometimes used as a term of address for attractive
       young women [syn: baby, babe, sister]
    6: a very young mammal; "baby rabbits"
    7: a project of personal concern to someone; "this project is
       his baby"
    v 1: treat with excessive indulgence; "grandparents often pamper
         the children"; "Let's not mollycoddle our students!" [syn:
         pamper, featherbed, cosset, cocker, baby,
         coddle, mollycoddle, spoil, indulge]

Moby Thesaurus II by Grady Ward, 1.0:

237 Moby Thesaurus words for "baby":
   Elzevir, Milquetoast, adolescent, angel, apprentice, babe, babish,
   baby bunting, baby-doll, baby-sized, babyish, bambino, bantam,
   bantling, banty, beginner, big baby, broad, buttercup, catechumen,
   cater to, cherub, chick, chickabiddy, chicken, chicken liver,
   child, cocker, coddle, colleen, compact, cosset, cotton, coward,
   crybaby, cutie, dame, damoiselle, damsel, darling, dear, deary,
   deb, debutant, demoiselle, diminutive, doll, doll-like, dollish,
   doormat, dote, dry-nurse, duck, duckling, dull tool, duodecimo,
   entrant, favor, filly, flame, fledgling, fraid-cat, fraidy-cat,
   frail, freshman, funk, funker, gal, girl, girlie, gratify,
   greenhorn, greeny, gutless wonder, handy, heifer, hon, honey,
   honey bunch, honey child, hopeful, hoyden, humor, in arms,
   in diapers, in nappies, in swaddling clothes, in the cradle,
   inamorata, incubator baby, indulge, infant, infantile, infantine,
   invertebrate, jellyfish, jeune fille, jill, junior, junior miss,
   juvenal, juvenile, kittenish, ladylove, lamb, lambkin, lass,
   lassie, learner, lightweight, lily liver, little angel,
   little darling, little missy, little one, love, lover,
   mademoiselle, maid, maiden, meek soul, mewling infant, microcosm,
   milksop, mini, miniature, miniaturized, minikin, minimal, minny,
   minor, minuscule, miss, missy, mollycoddle, mouse, namby-pamby,
   nebbish, neonatal, neonate, neophyte, nestling, newborn, newcomer,
   nonentity, novice, novitiate, nursling, nymphet, pamper, pansy,
   pantywaist, papoose, pet, petkins, piece, please, pocket,
   pocket-sized, pony, precious, precious heart, preemie,
   premature baby, preschooler, probationer, pubescent, puling infant,
   puppet, pushover, raw recruit, recruit, romp, rookie, sad sack,
   sapling, satisfy, scaredy-cat, schoolgirl, schoolmaid, schoolmiss,
   sissy, skirt, slip, small-scale, snookums, softling, softy, sop,
   spoil, sprig, steady, stripling, subdeb, subdebutante,
   subminiature, subteen, subteener, suckling, sugar, sweet,
   sweetheart, sweetie, sweetkins, sweets, teenager, teener,
   teenybopper, tenderfoot, toddler, tomato, tomboy, tot, toy,
   trainee, truelove, twelvemo, tyro, vest-pocket, virgin,
   weak sister, weakling, weanling, wench, wet-nurse, white feather,
   white liver, yearling, young creature, young hopeful, young person,
   young thing, younger, youngest, youngling, youngster, youth



The Devil's Dictionary (1881-1906):

BABE or BABY, n.  A misshapen creature of no particular age, sex, or
condition, chiefly remarkable for the violence of the sympathies and
antipathies it excites in others, itself without sentiment or emotion.
There have been famous babes; for example, little Moses, from whose
adventure in the bulrushes the Egyptian hierophants of seven centuries
before doubtless derived their idle tale of the child Osiris being
preserved on a floating lotus leaf.

            Ere babes were invented
            The girls were contended.
            Now man is tormented
    Until to buy babes he has squandered
    His money.  And so I have pondered
            This thing, and thought may be
            'T were better that Baby
    The First had been eagled or condored.
                                                               Ro Amil