Definition of Perth
1 city on the Swan River in southwestern Australia that is the capital of the state of Western Australia area population 1,728,867 — see fremantle
2 or Perthshireplay \-ˌshir, -shər\ former county of central Scotland
3 burgh in central Scotland on the Tay River northwest of Edinburgh population 47,000
Seen and Heard
What made you want to look up Perth? Please tell us where you read or heard it (including the quote, if possible).