spending money
noun [ U ] uk/ˈspen.dɪŋ ˌmʌn.i/ us/ˈspen.dɪŋ ˌmʌn.i/
零用钱
money that you can spend on activities you enjoy, entertainment, personal things, etc.
How much spending money are you taking on holiday? 度假时你打算带多少零用钱？
Compare: pin moneypocket money (ADULT'S MONEY)