From Longman Dictionary of Contemporary Englishwindfallwind‧fall /ˈwɪndfɔːl $ -fɒːl/ noun [countable] 1 MONEYan amount of money that you get unexpectedly his £2 million windfall in the lotterywindfall gain/profit etc (=high profit that you did not expect to make)2 TACa piece of fruit that has fallen off a tree
Examples from the Corpus
windfall• Mazzocchi said taxes to buy insurance for the uninsured would be a windfall for the insurance industry.• The merger could mean a $2.2 billion windfall for shareholders.• Meanwhile for the transnational companies that dominate the global coffee economy, the slump in coffee prices is generating windfall gains.• But for those with guts, some of the highest yields around can be found here -- and even an occasional windfall.• Would the Minister find it acceptable if the same sort of windfall profits were made by the beneficiaries of the sell-offs?• Voice over For growers across Herefordshire, Worcestershire and Gloucestershire the extra demand for apples is truly an unexpected windfall.• Building societies were converting into banks, insurance companies were changing their status, the air was thick with windfalls.windfall gain/profit etc• Meanwhile for the transnational companies that dominate the global coffee economy, the slump in coffee prices is generating windfall gains.• Would the Minister find it acceptable if the same sort of windfall profits were made by the beneficiaries of the sell-offs?• For a short-term gain of a one-off windfall profit, far greater future losses were stored up.• There was no shortage of opinions on what to do with the windfall gains.From Longman Business Dictionarywindfallwind‧fall /ˈwɪndfɔːl-fɒːl/ noun [countable]FINANCE an amount of money that a person or business gets unexpectedlyFalling interest rates are a windfall for homeowners refinancing their mortgages.The group earned a windfall profit on the sale of part of an office building in Paris. 