Definition of slush fund noun from the Oxford Advanced Learner's Dictionary


slush fund

BrE BrE//ˈslʌʃ fʌnd//
; NAmE NAmE//ˈslʌʃ fʌnd//
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a sum of money kept for illegal purposes, especially in politics Word Originmid 19th cent.: originally nautical slang denoting money collected to buy luxuries, from the sale of watery food known as slush.
See the Oxford Advanced American Dictionary entry: slush fund