postal code

American  

noun

1. British. postcode.

2. Canadian. a mailing code system similar to the zip code in the U.S. and the postcode in Britain.

---

postal code British  

noun

1. US equivalent: zip code.  Also called (in Britain and certain other countries): postcode.  a code of letters and digits used as part of a postal address to aid the sorting of mail

---

Etymology

Origin of postal code

First recorded in 1965–70