Golden Triangle noun6 •Any region of prosperity, influence, etc. bounded by three points. •A geographic region of Thailand, Laos and Myanmar, known for its production of opium and heroin.This is an informal crossing on a small river that separates the two countries in the infamous Golden Triangle. — 2019 •A region of Victoria, Australia, where the Victorian Gold Rush occurred. •A region of New South Wales, Australia, where prime agricultural land occurs, particularly for cereal crops, and from which golden sheaves of wheat are harvested. •A region of Cheshire, United Kingdom, especially known for a large population of Premier League footballers and other wealthy entertainers and professionals. •A region of North Yorkshire and West Yorkshire, United Kingdom, located between Harrogate, Leeds and York.