codebook
Translation
codebook
Examples
The spy memorised the entire codebook.
The spy memorized the entire codebook.
Grammar Patterns
((a book containing codes or ciphers)) a book used for encoding or decoding messages. The spy memorized the entire codebook.
Similar Words
Synonyms: cipher key, key book
Etymology
A compound word from 'code' + 'book'.
Memory Tips
It's literally a 'book' that contains 'codes'. Imagine a spy's little black book.