WordReference Random House Unabridged Dictionary of American English © 2020
Gold Coast′, 
  1. Place Namesa former British territory in W Africa;
    now a part of Ghana.
  2. a wealthy residential area along a shore, as in Florida between Miami and Palm Beach or in Chicago along the shore of Lake Michigan.

Collins Concise English Dictionary © HarperCollins Publishers::
Gold Coast n
  1. the former name (until 1957) of Ghana
  2. a line of resort towns and beaches in E Australia, extending for over 30 km (20 miles) along the SE coast of Queensland and the NE coast of New South Wales
'Gold Coast' also found in these entries (note: many are not synonyms or translations):
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