Definition: The word "after midnight" is a common expression in American English that refers to the time after midnight. It means that something or someone has finished or occurred at that time. Detailed definition of the word: The term 'after midnight' is a commonly used expression in American English to describe an event, activity, or situation that occurs or finishes later than midnight. The phrase usually refers to the completion of a certain period of time and can be used in various contexts, such as after hours, after work, after school, etc. Its meaning can vary depending on the speaker's age, culture, and personal circumstances.