An unspoken policy of concealment by police regarding the wrongdoing or illicit activity of other officers. Primarily heard in US, South Africa. I respect the need for the police, but it's hard to trust them completely when so many stories of the blue code of silence come to light.

Computer programming code that is written concisely, efficiently, and in an organized manner, so as to be easily read and understood by another. We encourage all our programmers to write clean code so that anyone else in the company can easily use and add to their work if necessary.

The practice of not disclosing important or vital information by members of a group, as due to the threat of violence, reprisal, being branded as a traitor, or an inherent sense of honor. There are parts of the city where the code of silence is so strong that police don't even bother questioning the residents there.

To determine or decipher a secret code. It is imperative that we break the enemy code and access their plans. She definitely broke the code on my phone—her picture is suddenly my new background!

To alter or improve something so that it meets building codes or regulations. Primarily heard in US. The inspector said we need to bring the house up to code by installing railings on the staircases.

slang Accidental defecation somewhere other than a toilet. Can you call the janitor? There's been a code brown in this hospital room.

slang Accidental urination somewhere other than a toilet. Can you call the janitor? There's been a code yellow in this hospital room.

The tendency for computer software to become gradually worse in performance or responsiveness over time, eventually leading to it becoming completely faulty, unresponsive, or unusable. This is either due to software failing to remain up to date and compatible with the operating system in which it operates, or because the software's code has been updated or altered in ways that have introduced more bugs and errors over time. (It doesn't refer to actual physical decay.) If you want to develop programs that people continue to use for years to come, you've got to factor in ways to avoid code decay with each new update, the users will eventually move on to something that works better. A lot of people just let programs sit on their hard drives for years at a time without being updated or upgraded at all, and then are totally flabbergasted when code decay renders them totally unusable down the line.

The tendency for computer software to become gradually worse in performance or responsiveness over time, eventually leading to it becoming completely faulty, unresponsive, or unusable. This is either due to software failing to remain up to date and compatible with the operating system in which it operates, or because the software's code has been updated or altered in ways that have introduced more bugs and errors over time. (It doesn't refer to actual physical decay.) If you want to develop programs that people continue to use for years to come, you've got to factor in ways to avoid code rot with each new update, the users will eventually move on to something that works better. A lot of people just let programs sit on their hard drives for years at a time without being updated or upgraded at all, and then are totally flabbergasted when code rot renders them totally unusable down the line.