Definition of "my"

First-person singular possessive determiner. See Appendix:Possessive#English.

1. Belonging to me.  examples

2. Associated with me.  examples

3. Related to me.  quotations  examples

   Quotations

   • From what conſummate vertue I have choſe / This perfect Man, by merit call'd my Son,

     1671, John Milton, “The First Book”, in Paradise Regain’d. A Poem. In IV Books. To which is Added, Samson Agonistes, London: […] J. M[acock] for John Starkey […], page 10, lines 165-166

4. In the possession of me.  examples

Used to express surprise, shock or amazement.  examples