adjective.
Used preceding various forms of polite, affectionate, or familiar address.
adjective.
Used in various interjectional phrases.
interjection.
Used as an exclamation of surprise, pleasure, or dismay.
The Century Dictionary and Cyclopedia
Belonging to me: as, this is my book: always used attributively, mine being used for the predicate. Formerly mine was more usual before a vowel, and my before a consonant, but my now stands before both: as, my book; my own book; my eye.
the GNU version of the Collaborative International Dictionary of English
Of or belonging to me; -- used always attributively; ; -- mine is used in the predicate. See mine.