in the kitty

桐野 夏生の "Grotesque" を読んでいます。

It was close to twelve o'clock when I got back to the office. Most of the girls, resigned to a lousy take for the evening, had gone home. The only people left in the office were the dispatched and the Braid. I handed ￥10,000 to the dispatcher and put ￥1,000 in the kitty for snacks and drinks and such. All the girls who'd had customers for the night were required to do this.

文中の "kitty" は文脈からスナックや飲み物を購入する資金を仲間で集めている入れ物だと推測できます。　辞書を見ます。

・Oxford English Dictionary: (informal) if money is put in a kitty, a group of people all give an amount and the money is spent on something they all agree on: We each put £50 in the kitty to cover the bills.
・Collins Dictionary: a pool formed from part of the winnings, to pay for refreshments, etc.: There was money in the kitty.
・Cambridge English Dictionary: money to be used for a particular purpose that has been collected from a number of people: We each put $20 a week into the kitty to cover the cost of food.

"kitty" は既に2回（4/2/2012と7/22/2011）取り上げていましたね。