"Plummet" refers to a rapid and steep fall or drop, often used to describe something that descends quickly from a high position. This term can apply to various contexts, such as an object falling from a height or a sudden decrease in value, like a stock price. In physics, a plummet can be associated with gravity, which causes objects to fall towards the Earth. The word is also used metaphorically, such as when discussing a company's financial performance or a person's mood, indicating a significant decline or downturn.