Definition: Pompelmous is a phrase that refers to something very large or extravagant, often used in the context of a person or an event. It can also be used as a noun meaning "large" or "extroverted". For example: 1. The pompelmous crowd was mesmerized by the performance. 2. The pompelmous celebration lasted for hours. The term is often used in a humorous or exaggerated manner to describe something that is simply too large, extravagant, or out of