Definition of I noun from the Oxford Advanced American Dictionary

  

I

 noun
noun
NAmE////
 
(also i)[countable, uncountable](pl. Is, I's, i's
NAmE//aɪz//
 
)
 
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  • the 9th letter of the English alphabet “Island” begins with (an) I/“I.”
  • Idioms
    dot your i's and cross your t's
     
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    to pay attention to the small details when you are finishing a task
    See the Oxford Advanced Learner's Dictionary entry: I