From Longman Dictionary of Contemporary Englishslush fundˈslush fund noun [countable] MONEYan amount of money kept for dishonest purposes, especially in politics
Examples from the Corpus
slush fund• They claim the expulsions were a cover-up bid after they tried to expose a slush fund run by crooked officials.• It also stated that Stans maintained a secret slush fund of cash in his office totaling at least $ 350,000.From Longman Business Dictionaryslush fundˈslush fund [countable] informal disapproving FINANCELAWa fund of money obtained secretly and illegally and used for illegal purposesHe operated an $18 million slush fund intended to corrupt Pentagon officials. → fund 