pin money
noun [ U ] uk/ˈpɪn ˌmʌn.i/ us/ˈpɪn ˌmʌn.i/
小额闲钱
a small amount of extra money that a person earns to buy things that they want but do not need
Compare: spending moneypocket money
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。