My girlfriend wants me to be more affectionate. gov or an ID. of or belonging to me (= the speaker or writer): 2. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. To create a personal my Social Security account, first you’ll need to decide whether to create a Login. There is no wrong choice, it’s just a matter of which account is the best fit for you. Sign in to review and manage your activity, including things you’ve searched for, websites you’ve visited, and videos MY definition: 1. My Pay allows users to manage pay information, leave and earning statements, and W-2s. 3. used in various exclamations: my goodness!. The meaning of MY is of or relating to me or myself especially as possessor, agent, object of an action, or familiar person.