the privy purse
noun /ðə ˌprɪvi ˈpɜːs/
/ðə ˌprɪvi ˈpɜːrs/
[singular]- (in the UK) an amount of money that the government gives to the king or queen to pay his or her private expenses plus some official expenses
(由英国政府拨的)女王私用金,国王私用金 CultureThe money comes mainly from the income of the the Duchy of Lancaster. The privy purse is separate from the Civil List, which pays for other official expenses of the whole royal family.