invisiblelock
nounUK /ɪnˈvɪzəbəl lɒk/
US /ɪnˈvɪzəbəl lɑːk/
A lock that you cannot see.
The treasure chest had an invisiblelock, so nobody could find the keyhole.
OTHER MEANINGS
2. A security feature on a computer that is hidden from users.
The app uses an invisiblelock to keep your files safe.
3. A magical barrier that stops people from entering without being seen.
The wizard placed an invisiblelock on the castle gate.
4. A lock that can only be opened by someone who knows it is there.
Only the guard knew about the invisiblelock on the back door.