chip (something) in
phrasal verb with chip verb [ I or T ] uk/tʃɪp/ us/tʃɪp/ -pp-
informal
C2 共同支付;凑钱，凑份子
to give some money when several people are giving money to pay for something together
They all chipped in £100 and bought their mother a trip to Greece. 他们每人凑了100英镑，让母亲到希腊旅游一趟。