code

(noun): A short symbol, often with little relation to the item it represents.
(noun): 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.
(noun): Any system of principles, rules or regulations relating to one subject.
(noun): A set of rules for converting information into another form or representation.
(noun): A message represented by rules intended to conceal its meaning.
(noun): A cryptographic system using a codebook that converts words or phrases into codewords.
(noun): Instructions for a computer, written in a programming language; the input of a translator, an interpreter or a browser, namely: source code, machine code, bytecode.
(noun): (scientific programming) A program.
(noun): A particular lect or language variety.
(noun): An emergency requiring situation-trained members of the staff.
(verb): To write software programs.
(verb): To add codes to a dataset.
(verb): To categorise by assigning identifiers from a schedule, for example CPT coding for medical insurance purposes.
(verb): To encode.
(verb): To encode a protein.
(verb): To call a hospital emergency code.

This flavour of soup has been assigned the code WRT-9.
The medical code is a system of rules for the regulation of the professional conduct of physicians.
I wrote some code to reformat text documents.
I learned to code on an early home computer in the 1980s.
We should code the messages we send out on Usenet.