'Parcel post' definitions:

Definition of 'parcel post'

noun

Postal service that handles packages

From: GCIDE

Parcel \Par"cel\, n. [F. parcelle a small part, fr. (assumed) LL. particella, dim. of L. pars. See Part, n., and cf. Particle.]
1. A portion of anything taken separately; a fragment of a whole; a part. [Archaic] "A parcel of her woe." --Chaucer. [1913 Webster]
Two parcels of the white of an egg. --Arbuthnot. [1913 Webster]
The parcels of the nation adopted different forms of self-government. --J. A. Symonds. [1913 Webster]
2. (Law) A part; a portion; a piece; as, a certain piece of land is part and parcel of another piece. [1913 Webster]
3. An indiscriminate or indefinite number, measure, or quantity; a collection; a group. [1913 Webster]
This youthful parcel Of noble bachelors stand at my disposing. --Shak. [1913 Webster]
4. A number or quantity of things put up together; a bundle; a package; a packet. [1913 Webster]
'Tis like a parcel sent you by the stage. --Cowper. [1913 Webster]
Bill of parcels. See under 6th Bill.
Parcel office, an office where parcels are received for keeping or forwarding and delivery.
Parcel post, that department of the post office concerned with the collection and transmission of parcels; also, the transmission through the parcel post deparment; as, to send a package by parcel post. See parcel post in the vocabulary.
Part and parcel. See under Part. [1913 Webster]

From: GCIDE

Parcel post \Par"cel post\ That branch of the post office having to do with the collection, transmission, and delivery of parcels[4]. The British Inland Parcel Post was established in 1883. The rates in 1913, dating from 1897, were 3d. for parcels not exceeding one pound and 1d. for each additional pound up to the limit of 10 pounds. A general parcel post was established in the United States by Act of August 24, 1912, which took effect Jan. 1, 1913. At that time, parcels could not exceed 11 pounds in weight nor 72 inches in length and girth combined. Provision is made from insuring parcels, and also for sending parcels C.O.D. The rates of postage vary with the distance. See Zone, below. [Webster 1913 Suppl. +PJC]