noun
bonanza
buh-NAN-zuh/bəˈnænzə/
A source of great profit, success, or good fortune.
The rich seam of gold proves a bonanza for the prospector.

Etymology
Spanish bonanza linked fair weather at sea with prosperity and then a rich mineral lode. That mining sense supplied the image of a discovery yielding exceptional wealth or opportunity.
In context
when gorbachev came to new york for a summit in 1988 trump saw a chance for a pr bonanza
More examples
- The festival brought a commercial bonanza to local shops.
- The archive is a bonanza for historians.
- Several short-lived mining bonanzas transformed the region.
Forms
bonanza · bonanzas
Similar words
- windfall
- An unexpected gain rather than a continuing rich source.
- bounty
- An abundant supply or reward without necessarily commercial profit.