whip-round
noun [ C usually singular ] UK informal uk/ˈwɪp.raʊnd/ us/ˈwɪp.raʊnd/
份子钱，凑钱
a collection of money made by a group of people that is then given to a particular person or used to buy a present for them
We usually have a whip-round at work for people who are leaving. 我们通常凑份子为离职的人买礼物。