According to the Merriam-Webster dictionary, a rundown is an item-by-item report or review, or a summary. However, the term can have different meanings depending on the context. For example, in baseball, a rundown is a play in which a base runner is caught between bases by two or more players of the opposing team who toss the ball back and forth in an effort to tag the runner out. In the TV show "The Office," a rundown refers to a list of vendors and what products they are ordering and how much, usually used when someone is about to get fired. Therefore, the meaning of a rundown can vary depending on the situation.