The word "Portcluse" is not a commonly used term and the spelling may seem unfamiliar to many. However, it can be broken down into two parts: "port" and "cluse". The first part, "port", refers to a place where ships can dock or unload cargo. The second part, "cluse", comes from the French word "cluse" which means a narrow or confined space. The correct pronunciation of "Portcluse" is /pɔːtˈkluːz/, with the stress on the second syllable.