/ maɪ; NAmE / determiner (the possessive form of I )
1.
of or belonging to the speaker or writer :
Where's my passport?
My feet are cold.
2.
used in exclamations to express surprise, etc. :
My goodness! Look at the time!
3.
used when addressing sb, to show affection :
my dear / darling / love
4.
used when addressing sb that you consider to have a lower status than you :
My dear girl, you're wrong.
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WORD ORIGIN
Middle English mi (originally before words beginning with any consonant except h- ), reduced from min , from Old English mīn , of Germanic origin.