Definition of do noun from the Oxford Advanced American Dictionary

 

do1

 noun
noun
NAmE//du//
 
(pl. dos, (or )do's
NAmE//duz//
 
)
(informal)
 
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  • a party; a social event Are you having a big do for your birthday?
  • Idioms
    dos and don'ts(also do's and don'ts)(informal)
     
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    rules that you should follow Here are some dos and don'ts for exercise during pregnancy.
    See the Oxford Advanced Learner's Dictionary entry: do