Associations to the word «Codebook»

Wiktionary

CODEBOOK, noun. (cryptography) A book, table, database, or other object that stores the mapping between plaintext words or phrases and their equivalents in a code.
CODEBOOK, noun. (computer science) A lookup table.

Wise words

Every once in a while, you let a word or phrase out and you want to catch it and bring it back. You can't do that. It's gone, gone forever.
Dan Quayle