a source of great and sudden wealth or luck; a spectacular windfall: The play proved to be a bonanza for its lucky backers.
Origin of bonanza
1835–45, Americanism;<Spanish: literally, smooth sea (hence, good luck, rich vein of ore), nasalized variant of Medieval Latin bonacia, equivalent to Latin bon(us) good + (mal)acia calm sea <Greek malakía softness (malak(ós) soft + -ia-ia)
Words nearby bonanza
bona fide, bona fides, Bonaire, bon ami, Bonampak, bonanza, Bonanza Creek, Bonaparte, Bonapartism, Bonapartist, bon appétit
As bonanza fame is like to be, the earlier bruitings of it were as nebulous as the later and more detailed accounts were fabulous.
The Helpers|Francis Lynde
Those were the bonanza days of the upper Columbia and Kootenay—such days as they have never seen since nor will ever see again.
Down the Columbia|Lewis R. Freeman
When they told him they were from Bonanza, he was nonplussed.
Revolution and Other Essays|Jack London
The new railroad that was built into Jonesville about that time was a bonanza for us.
At Good Old Siwash|George Fitch
That ain't any bonanza country any more; 1901 ain't like 1870; don't figure on that.
The Spenders|Harry Leon Wilson
British Dictionary definitions for bonanza
bonanza
/ (bəˈnænzə) /
noun
a source, usually sudden and unexpected, of luck or wealth
US and Canadiana mine or vein rich in ore
Word Origin for bonanza
C19: from Spanish, literally: calm sea, hence, good luck, from Medieval Latin bonacia, from Latin bonus good + malacia dead calm, from Greek malakia softness