Longman Dictionary of Contemporary English
Wikipedia
In communication, a code word is an element of a standardized code or protocol. Each code word is assembled in accordance with the specific rules of the code and assigned a unique meaning. Code words are typically used for reasons of reliability, clarity, brevity, or secrecy.
A Code word may refer to:
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Code word (figure of speech), a term chosen for propaganda value
- "Code word", a rhetorical device used in political propaganda
- Code word, in cryptography and telecommunications
A code word is a word or a phrase designed to convey a predetermined meaning to a receptive audience, while remaining inconspicuous to the uninitiated. For example, a public address system may used to make an announcement asking for " Mr Sands" to attend a particular area, which staff will recognise as a code word for fire, and the general public will ignore.
Usage examples of "code word".
Need a sit rep and hawkeye,' he said, using the radio code word for grid coordinates.
You'd have to capture a pocket computer intact, and even that wouldn't help for long, since the code word meanings changed from day to day and unit to unit.
After receiving those, it sent a code word back, directly to the home computer, and asked for a matching word from the code disk.
Inside its chest, where an animal's heart and lungs would be, was a small cargo compartment, and at a code word from Harry, the door of this came open.
What exactly was going on, behind the mysterious code word, was a challenging question.