
1) PO branch 2) Alternative to UPS Ground 3) Method of shipping 4) Package delivery service 5) Package-mailing option
Found on
https://www.crosswordclues.com/clue/parcel-post

Parcel post is a postal service for mail that is too heavy for normal letter post. It is usually slower than letter post. The development of the parcel post is closely connected with the development of the railway network which enabled parcels to be carried in bulk, to a regular schedule and at economic prices. Today many parcels also travel by ro...
Found on
http://en.wikipedia.org/wiki/Parcel_post

(from the article `postal system`) ...activities also expanded. In addition to its primary role, it gradually extended its functions to cover other international services provided by ... ...by an operator into instructions for a sorting machine. Since this system obviates the need for a keyboard, it leaves the operator`s hands free, ......
Found on
http://www.britannica.com/eb/a-z/p/18

[
n] - postal service that handles packages
Found on
http://www.webdictionary.co.uk/definition.php?query=parcel%20post
noun postal service that handles packages
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.