My  poss. Pron. (attrib.) 1 of or belonging to me. 2 affectionate, patronizing, etc. Form of address (my dear boy). 3 in expressions of surprise (my god!; oh my!). 4 colloq. Indicating a close relative etc. Of the speaker (my johnny's ill again).  my lady (or lord) form of address to certain titled persons. [from *mine1]