gold rush

Noun (2)

1. a sudden happening that brings good fortune (as a sudden opportunity to make money)“the demand for testing has created a boom for those unregulated laboratories where boxes of specimen jars are processed like an assembly line”Synonyms: boombonanzagravygodsendmanna from heavenwindfallbunceType of happening, occurrence
2. a large migration of people to a newly discovered gold fieldType of migration