key money
noun [ U ] UK uk/ˈkiː ˌmʌn.i/ us/ˈkiː ˌmʌn.i/
（房客取钥匙时向房主付的）保证金，押金
a payment demanded by the owner of a house, apartment, etc. from the person who is going to rent it
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。