Definition of master key in English:

master key

Syllabification: mas·ter key

noun

  • A key that opens several locks, each of which also has its own key: the custodian has the master key to all the classrooms
    More example sentences
    • The change key will open only that specific lock, while the master key will open that lock and several others in a group.
    • She used her master key to open the lock, and began to open the gate.
    • I got the master key and opened the door and that's when I saw him in the bath.

More definitions of master key

Definition of master key in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day grotesquerie
Pronunciation: grəʊˈtɛskəri
noun
grotesque quality or grotesque things collectively