master key
英 [ˈmɑːstə kiː]
美 [ˈmæstər kiː]
n. 万能钥匙
牛津词典
noun
- 万能钥匙
a key that can be used to open many different locks in a building
柯林斯词典
- 万能钥匙
Amaster keyis a key which will open all the locks in a set, even though each lock has its own different key.
英英释义
noun
- key that secures entrance everywhere