noun, plural babies.
an infant or very young child.
a newborn or very young animal.
the youngest member of a family, group, etc.
an immature or childish person.
a human fetus.
Sometimes Disparaging and Offensive. a girl or woman, especially an attractive one.
a person of whom one is deeply fond; sweetheart.
(sometimes initial capital letter) an affectionate or familiar address (sometimes offensive when used to strangers, casual acquaintances, subordinates, etc., especially by a male to a female).
a man or boy; chap; fellow: He's a tough baby to have to deal with.
an invention, creation, project, or the like that requires one's special attention or expertise or of which one is especially proud.
an object; thing: Is that car there your baby?
of or suitable for a baby: baby clothes.
of or like a baby; infantile: baby skin.
small; comparatively little: a baby car.
treating babies: a baby doctor.
verb (used with object), babied, babying.
to treat like a young child; pamper.
to handle or use with special care; treat gently.

1350–1400; Middle English; see babe, -y2

babyhood, noun
babyish, adjective
babyishly, adverb
babyishness, noun
babylike, adjective

10. indulge, spoil, humor, coddle. Unabridged


Warren ("Baby") 1898–1959, U.S. jazz drummer. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
baby (ˈbeɪbɪ)
n , pl -bies
1.  a.  a newborn or recently born child; infant
 b.  (as modifier): baby food
2.  an unborn child; fetus
3.  the youngest or smallest of a family or group
4.  a.  a newborn or recently born animal
 b.  (as modifier): baby rabbits
5.  derogatory usually an immature person
6.  slang a young woman or sweetheart: often used as a term of address expressing affection
7.  a project of personal concern
8.  be left holding the baby to be left with the responsibility
9.  throw the baby out with the bath water to lose the essential element by indiscriminate rejection
10.  (prenominal) comparatively small of its type: a baby car
vb , -bies, -bies, -bying, -bied
11.  to treat with love and attention
12.  to treat (someone) like a baby; pamper or overprotect
[C14: probably childish reduplication; compare mama, papa1]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

late 14c., babi, dim. of baban (see babe). The verb meaning "to treat like a baby" is from 1742. As a term of endearment for one's lover it is attested perhaps as early as 1839, certainly by 1901; its popularity perhaps boosted by baby vamp "a popular girl," student slang from
c.1922. Baby blues for "blue eyes" recorded by 1944 (the phrase also was used for "postpartum depression" 1950s-60s). To empty the baby out with the bath (water) is first recorded 1909 in G.B. Shaw (cf. Ger. das Kind mit dem Bade ausschütten).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

baby ba·by (bā'bē)
A very young child; an infant.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Slang Dictionary

baby definition

  1. n.
    a lover; one's sweetheart. (Also a term of address.) : Come over here and kiss me, baby.
  2. n.
    a term of address for a friend or pal of either sex. : Come on, baby, push this thing—hard!
  3. n.
    a thing; a gadget; a machine, such as a car. (Similar to sucker.) : Hand me that baby with the sharp point, will you?
  4. n.
    a project thought of as an offspring. (Always with a possessor.) : Whose baby is the Johnson account?
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw-Hill Education.
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American Heritage
Abbreviations & Acronyms
Department of Defense Dependent Schools
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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American Heritage
Idioms & Phrases


see throw out the baby with the bath water.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Example sentences for baby
Picking the bush baby totem, for example, creates fast, nimble characters.
The baby keeps crying all night, preventing the three to sleep.
When they reach there, they find the baby in the dark, unconscious and not
Tells them that a miracle has happened and the baby girl has survived.
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