postal code

Noun

 * 1) A sequence of letters and/or numbers added to a postal address to aid the sorting and delivery of post/mail.
 * Don't forget to add the postal code to the envelope, or it won't be delivered on time.

Usage notes

 * This is the generic term for any of the official codes established by postal services intended to facilitate mail delivery.
 * Within a country many speakers may use the name of the national postal code (such as "zip code") to refer to any such code, even if it is the postal code of a foreign postal service.

Hyponyms

 * (US) ,