Noun
a sudden happening that brings good fortune (as a sudden opportunity to make money)
a large migration of people to a newly discovered gold field
Source: WordNetgold-rush
The first treasure California began to surrender after the Gold Rush as the oldest: her land. John Jakes
The Gold Rush and the Pony Express made Sacramento a substantial place in terms of enterprise. Wayne Thiebaud
Somewhere between the gold rush of easy internet profits and an arrogant sense of endless empire, we heard kind of a pinging noise, and uh, then the damn thing just died on us. Jon Stewart
DNA was my only gold rush. I regarded DNA as worth a gold rush. James D. Watson
the demand for testing has created a boom for those unregulated laboratories where boxes of specimen jars are processed like an assembly line Source: Internet
1860s: The 'Sleepy Hollow' Exhibition Building and Market Square Clocktower in 1879 (both since demolished) The gold rush had seen Ballarat and Bendigo grow larger than Geelong in terms of population. Source: Internet