baby Definition in the Cambridge English Dictionary
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Definition of “baby” - English Dictionary

Definition of "baby" - American English Dictionary

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babynoun [C]

 us   /ˈbeɪ·bi/
a very ​youngchild: Sandra had a baby on May 29th. My ​youngerbrother is the baby of the ​family. Baby can be used to refer to anything ​young or ​smaller than ​usual: baby ​corn/​limabeans disapproving Baby can also ​mean someone who is ​behavingchildishly: She ​complained like a baby about her ​boyfriend. infml Baby is an ​affectionate way of ​addressing someone. infml A baby can also be a ​project or ​job someone has a ​specialinterest in or ​responsibility for: The new ​computersystem is really Phil’s baby.

babyverb [T]

 us   /ˈbeɪ·bi/
to ​treat an ​olderperson like a ​youngchild: Some ​parents baby ​theirchildren too much. I like to be babied when I’m ​sick.
(Definition of baby from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "baby" - British English Dictionary

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babynoun [C]

uk   us   /ˈbeɪ.bi/
A1 a very ​youngchild, ​especially one that has not ​yetbegun to ​walk or ​talk: a ​newborn baby a six-week-old baby a baby ​boy baby ​clothes baby ​food Sandra had a baby (= gave ​birth to it) on 29 May. Owen is the baby (= the ​youngestperson) of the ​family.A2 a very ​younganimal: a baby ​elephant/​monkey disapproving an ​adult or ​especially an ​olderchild who is ​crying or ​behaving like a ​child: It didn't ​hurt that much - don't be such a baby! mainly US a word you can use when you are ​talking to someone you ​love such as ​yourwife, ​husband, ​partner, etc.: Oh baby, I ​love you.baby carrot, sweetcorn, etc. a ​type of ​vegetable that is ​speciallygrown to ​staysmall informal Someone's baby is something that they have a ​specialinterest in and ​responsibility for: I don't ​know much about the ​project - it's Philip's baby.
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babyverb [T]

uk   us   /ˈbeɪ.bi/ informal
to ​treat an ​olderchild as if he or she were a much ​youngerchild: The ​boys were now ten and twelve and didn't ​wanttheirmother to baby them.
(Definition of baby from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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