cipherrule
nounUK /ˈsaɪfəruːl/
US /ˈsaɪfərruːl/
A cipherrule is a special rule that tells you how to turn a secret message into normal words.
The detective used a cipherrule to read the hidden note.
RELATED WORDS
OTHER MEANINGS
2. A set of instructions for making or breaking a code.
Each spy team had its own cipherrule to keep messages safe.
3. A pattern used to swap letters so a message looks like gibberish.
The cipherrule swapped every letter with the one after it in the alphabet.
4. A guide that helps you solve a secret puzzle.
Without the cipherrule, the treasure map made no sense.