Focus on the pronunciation of slush fund
English definition of “slush fund”
noun [C] FINANCE
› money that is kept by a business or other organization for illegal purposes: The CEO treated this money as his own personal slush fund and used it to evade taxes. He was convicted of setting up a secret slush fund to bribe politicians.
› informal money that is kept for unexpected costs: We have set up a small slush fund to cover any unexpected running costs.