Definition of zip codes:
(n) :
(US) A postal code, especially for addresses served by the US Postal Service, consisting of a five- or nine-figure number.
(n) :
(US, by extension) Any postal code.
(n) :
(Philippines) A postal code, especially for addresses served by PhilPost, consisting of a four-figure number.
(v) :
(transitive) To provide with, or allocate to, a zip code.
(n) :
(sports, by extension) A grouping of athletes or teams with similar skill level.
(n) :
Alternative form of zip code. [(US) A postal code, especially for addresses served by the US Postal Service, consisting of a five- or nine-figure number.]