zip code

Từ điển Oxford Advanced Learner 8th

ˈzip code BrE NAmE (also ZIP code) (US) (BrE, CanE post·code) noun
a group of letters and/or numbers that are used as part of an address so that post/mail can be separated into groups and delivered more quickly
See also: ↑postcode

Word Origin:
[zip code] 1960s: Zip, acronym from zone improvement plan.

Culture:
‘Zip’ is an abbreviation for the Zone Improvement Plan, a system introduced by the US Postal Service in 1963. The word ‘zip’ also suggests speed, because the numbers help mail to be delivered quickly. Zip codes have five numbers, and Zip+4 Codes have five numbers and another four numbers separated by a hyphen, e.g. NY 10016-4314.
Compare ↑postal district
.