(pharmacology) An addictive alkaloid narcotic derived from opium and used as a hypnotic, analgesic and antitussive; often mixed with aspirin etc.

A formal specification of acceptable attire for a specific event or location.

Non-redundant software code comprising of focussed task-specific modules and functions, written in a systematic manner so that another coder can easily interpret or modify it.

Uncommon form of zip code.

(telecommunications) A character code represented by dots and dashes (or short and long pulses), originally used to send messages by telegraph, later by flashes of light or by radio.

(computing) To build absolute and unchangeable values into a program such that they can only be changed by modifying the source code.

A set of rules dictating acceptable behaviour and decisions in a specified environment.

(Britain) a set of rules and regulations aimed at tourists visiting the countryside

Alternative form of codetalker

A set of guidelines and regulations to be followed by members of some profession, trade, occupation, organization etc.; does not normally have the force of law.