| Definition/Meaning | Word/Phrase |
| bags of letters and packages that are transported by the postal service |
mail
|
| conveyance that transports the letters and packages that are conveyed by the postal system |
mail
|
| materials delivered by a postal system |
mail
|
| postal service that handles packages |
parcel post
|
| token that postal fees have been paid |
postage
,
postage stamp
,
stamp
|
| code of letters and digits added to a postal address to aid in the sorting of mail |
postal code
,
postcode
,
ZIP
,
ZIP code
|
| independent federal agency that recommends changes in postal rates |
Postal Rate Commission
|
| cancellation mark stamped on mail by postal officials; indicates the post office and date of mailing |
postmark
|
| official in charge of the national postal service |
postmaster general
|
| any mail that is physically delivered by the postal service |
snail mail
|
| mail consisting of printed matter qualifying for reduced postal rates |
third-class mail
,
third class
|
| primary law enforcement arm of the United States Postal Service |
United States Postal Inspection Service
,
US Postal Inspection Service
|
| 5-digit identification code for a U.S. postal delivery area |
zip code
|