A city in the Netherlands, at the mouth of the River Meuse, 25 km (15 miles) inland from the North Sea; population 582,951 (2008). It is one of the world's largest ports and a major oil refinery, with extensive shipbuilding and petrochemical industries.
Definition of Rotterdam in US English:
Rotterdam
proper nounˈrädərˌdam
A city in the Netherlands, at the mouth of the Meuse River, 15 miles (25 km) inland from the North Sea; population 582,951 (2008). It has extensive shipbuilding and petrochemical industries.