noun
1. a secret method of writing
• Syn: ↑cipher, ↑cypher, ↑secret code
• Hypernyms: ↑code
2. a piece of writing in code or cipher
• Syn: ↑cryptogram, ↑secret writing
• Hypernyms: ↑writing, ↑written material, ↑piece of writing
3. a device for deciphering codes and ciphers
• Hypernyms: ↑device
Useful english dictionary. 2012.