Definition of my determiner from the Oxford Advanced American Dictionary

      

    my

     determiner
    determiner
    NAmE//maɪ//
     
    (the possessive form of I)
     
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  1. 1of or belonging to the speaker or writer Where's my passport? My feet are cold.
  2. 2 used in exclamations to express surprise, etc. My goodness! Look at the time!
  3. 3used when addressing someone, to show affection my dear/darling/love
  4. 4used when addressing someone that you consider to have a lower status than you My dear girl, you're wrong.
See the Oxford Advanced Learner's Dictionary entry: my