“code” – English explanatory dictionary

noun 1. a set of laws or rules of behaviour ○ The hotel has a strict dress code, and people wearing jeans are not allowed in. 2. secret words or a system agreed in advance for sending messages ○ We’re trying to break the enemy’s code. ○ He sent the message in code. 3. a system of numbers or letters which mean something ○ The code for Heathrow Airport is LHR. ○ What is the code for phoning Edinburgh?

(kod), n. [F., fr. L. codex, caudex, the stock or stem of a tree, a board or tablet of wood smeared over with wax, on which the ancients originally wrote; hence, a book, a writing.]
1. A body of law, sanctioned by legislation, in which the rules of law to be specifically applied by the courts are set forth in systematic form; a compilation of laws by public authority; a digest. The collection of laws made by the order of Justinian is sometimes called, by way of eminence. ´The Code´ Wharton.
2. Any system of rules or regulations relating to one subject; as the medical code, a system of rules for the regulation of the professional conduct of physicians; the naval code, a system of rules for making communications at sea means of signals. Code civil or Code Napoleon, a code enacted in France in 1803 and 1804, embodying the law of rights of persons and of property generally. Abbot.