To recall or bring to mind a past event or piece of information. I remember meeting her at the conference last year.
To keep someone or something in mind as important or significant. Please remember to lock the door before you leave.
To commemorate or honor someone or something. We remember the soldiers who fought for our freedom on this day.
To convey greetings or regards from one person to another (chiefly with the preposition "to"). Remember me to your parents when you see them.