An industrial city in southwestern Pennsylvania, southeast of Pittsburgh, noted as the site of a devastating flood in 1889; population 21,641 (est. 2008).
Definition of Johnstown in US English:
Johnstown
proper nounˈjänztoun
An industrial city in southwestern Pennsylvania, southeast of Pittsburgh, noted as the site of a devastating flood in 1889; population 21,641 (est. 2008).