(MONEY) [noun] [C usually singular] - an amount of money which consists of smaller amounts given by different people and which is used by them for an agreed purposeThe three people who live in the house all put £20 a week in/into the kitty, and that covers the cost of food.
KITTY
Meaning of KITTY in English
Cambridge English vocab. Кембриджский английский словарь. 2012