A sequence of letters and/or numbers added to a postal address to aid the sorting and delivery of post/mail.

A numeric code generated at regular intervals by a timing system.

A code used on DVDs to identify which region's DVD player it will play in. / A code used in DVD players to allow only DVDs being sold in that region to be played.

(computing) Instructions for a computer in a form the computer can directly use (i.e. which it can execute). Derived from source code by compiling or assembling and linking.

(computing) the attachment of a digital certificate (from a certification authority) to an executable program to ensure its legitimacy

present participle of code-switch

A binary coding system in which successive values differ in just one digit position.

(linguistics) The phenomenon or practice of alternating between two or more languages or language varieties.

Any code whose elements may take one of three values

(computing) The output of a compiler or assembler; it is not necessarily executable directly without linking to other modules