(US, Australia, Philippines) A prefix appended to a telephone number indicating the geographical area.

(computing) Any character used to specify a function of a piece of software or hardware (such as carriage return of a printer)

The official road safety manual for the United Kingdom, covering pedestrians, animals, cyclists, motorcyclists and drivers. / The rules set forth in the Highway Code.

(British spelling) Any system where colours are used to categorize elements of sets.

(British spelling) To mark items with a colour code as a means of sorting.

(programming) A block of source code, often one that is delimited by brackets or in some similar way, depending on the programming language.

(business, espionage, military) A name used to clandestinely identify somebody or something, either for military or espionage purposes, or for commercial confidentiality.

plural of source code

plural of area code

(computing) A numeric value or string of such values that triggers a specific command or action to occur, rather than displaying a text character.