EnglishMain Dictionary
windfall
Universal Words
noun
1 an amount of money that sb/sth wins or receives unexpectedly:
The hospital got a sudden windfall of 」300000. * windfall gains / profits * The government imposed a windfall tax (= a tax on profits to be paid once only, not every year) on some industries.
2 a fruit, especially an apple, that the wind has blown down from a tree:
The ground was covered with windfalls.