Definitions

1. noun

a word or phrase used as a password or key to a code, or a word used to convey a secret message

“The cryptographer used a codeword to protect the sensitive information from unauthorized access.”

2. verb

to use a codeword to convey a secret message or to gain access to a secure system

“The agent codeworded the message to the fellow operative, who then decoded it to understand the plan.”

3. noun

a word or phrase used to represent a password or key to a code, especially in cryptography

“The cryptographer used a combination of letters and numbers as the codeword to secure the encrypted data.”