EXAMPLES FROM THE WEB FOR BONANZA
That ain't any bonanza country any more; 1901 ain't like 1870; don't figure on that.
When they reached Bonanza the sun was low, and when they were off San Lucar it had begun to sink.
Then, at last, as if in despair, I mentioned this bit on Bonanza.
Staked twenty-two on Bonanza and sold out yesterday to the Syndicate.
Why, man, the old mine must have been a bonanza, if it all panned out stuff like this!
All along he had been relying upon a "bonanza crop" to reimburse him.
There was no proof to uncover and no bonanza lode for you to find.
The new railroad that was built into Jonesville about that time was a bonanza for us.
When they told him they were from Bonanza, he was nonplussed.
The possession of the Philippines, on the other hand, has not been a bonanza for Spain.
1844, American English, from Spanish bonanza "a rich lode," originally "fair weather at sea, prosperity," from Vulgar Latin *bonacia, from Latin bonus "good" (see bene-).