(also ˌchip ˈin sth) to give some money so that a group of people can buy sth together 凑份子 SYN contribute
If everyone chips in we’ll be able to buy her a really nice present.
如果大家都凑钱，我们就能给她买件很好的礼物。
We each chipped in (with) £5.
我们每人凑了 5 英镑。
ˌchip ˈoff