noun🔗ShareA book, table, database, or other object that stores the mapping between plaintext words or phrases and their equivalents in a code."During World War II, both sides used codebooks to encrypt and decrypt secret messages. "communicationtechnologycomputinglanguagemilitarytechnicalwritinginfosystemscienceChat with AIVocabulary GamePractice Reading
noun🔗ShareA lookup table."The librarian used the codebooks to find the call number for the new mystery novel. "technologycomputingcommunicationinfotechnicalsystemChat with AIVocabulary GamePractice Reading
