master key in English
noun
1
a key that opens several locks, each of which also has its own key.
the custodian has the master key to all the classrooms
Use "master key" in a sentence
Below are sample sentences containing the word "master key" from the English Dictionary. We can refer to these sentence patterns for sentences in case of finding sample sentences with the word "master key", or refer to the context using the word "master key" in the English Dictionary.
1. It's a master key.
2. I need the master key to check out the floor.
3. I mean, a hotel employee would have access to a master key.
4. The master key to any and all riddles of the Grid, Grid, Grid, Grid...
5. It's the master key to all digital information, real time access to any database.