pin money
零用钱；额外的零花钱
口语·指零花钱
英文释义
extra money for small expenses or personal use
例句
She earns a bit of pin money by selling handmade crafts online.
典故来源
源自16世纪英国，丈夫给妻子买别针的零花钱，后泛指小额私房钱。