poss.pron. (attrib.) 1 of or belonging to me or myself (my house; my own business). 2 as a form of address in affectionate, sympathetic, jocular, or patronizing contexts (my dear boy). 3 in various expressions of surprise (my God!; oh my!). 4 Brit. colloq. indicating the speaker's husband, wife, child, etc. (my Johnny's ill again). my Lady (or Lord) the form of address to certain titled persons.
[ ME mi, reduced f. min MINE(1) ]