Definition
A small bundle or parcel. In legal usage, the term appears most often in two contexts:
1. Postal and regulatory law: A packet is a small bundle of letters, papers, or printed materials grouped together for conveyance. In this context, the term has carried weight in statutes and rulings governing postal monopolies, private mail carriage, and contraband conveyance — particularly whether a given item (such as a newspaper) falls within the class of materials subject to postal regulation.
2. Maritime law: A packet, or packet boat, is a vessel operating on a fixed schedule to carry mail, dispatches, passengers, and cargo — originally operating under government authority. The term appears in admiralty contexts, treaty provisions, and early commercial navigation law.
Common Language
Modern common usage (Wiktionary): A small pack or package; a little bundle or parcel. Also, historically, a mail boat or vessel carrying dispatches on a fixed sailing schedule.
Historical common usage (Webster's 1913): A small pack or package; a little bundle or parcel. Also, a vessel employed by government to convey dispatches or mails, later extended to carrying passengers and goods on fixed sailing days.
The common meaning and the legal meaning run closely parallel, which creates its own research trap: because the word feels self-evident, researchers may underestimate how much definitional work courts and legislatures have done around it. The legally consequential question — whether a particular item is a "packet" subject to a postal monopoly or carriage prohibition — turned on careful boundary-drawing that plain reading of the word does not resolve.
Common Confusion
In older statutes and decisions, packet (as a bundle of papers or letters) and packet boat (as a class of vessel) appear in close proximity and can be mistaken for one another when context is not read carefully. A prohibition on private conveyance of "letters and packets" concerns bundles of written materials, not vessels. A reference to packet service or packet lines concerns maritime carriage. These are distinct legal regimes — postal regulation on one hand, admiralty and navigation law on the other — and conflating the two will send a researcher in the wrong direction.
Why It Matters in Research
The primary legal significance of packet in the Law Mind corpus falls in postal monopoly law. Statutes prohibiting private carriage of letters applied penalties that turned entirely on classification: was the item conveyed a letter? A packet? A newspaper? Anderson's entry notes that courts held newspapers to fall within the meaning of "packets" for purposes of such prohibitions — a non-obvious result that would not be apparent from ordinary reading of the word.
Researchers working with colonial-era, early American, or nineteenth-century postal statutes should be alert to this classification question. The scope of a postal monopoly, and the exposure of private carriers, depended on what counted as a packet. Contemporary intuitions about the word may not match how courts drew the line.
In the maritime context, packet appears in treaties (particularly postal conventions between nations), early admiralty decisions, and navigation acts governing licensed vessel classes. The packet boat was a recognized category of vessel with defined legal attributes — not simply any small ship carrying mail informally. Researchers in admiralty, shipping history, or international postal conventions should treat it as a term of art rather than a generic descriptor.
Digital-era usage of packet (as a unit of data in network communications) has no legal ancestry in these traditional definitions and belongs to an entirely separate body of telecommunications and internet law. The terminological overlap is coincidental. Do not carry modern network-law connotations into research on historical postal or maritime sources.
Historical Dictionary Support
Anderson's Dictionary of Law defines packet as "a small bundle" and specifically addresses its postal law application, noting that courts held it to include newspapers within the meaning of prohibitions on private conveyance. This is the entry's most practically useful contribution: it resolves an interpretive question that the plain meaning of the word leaves open.
Anderson does not address the maritime meaning of packet boat, which reflects that dictionary's focus on general legal vocabulary rather than admiralty terminology. Researchers seeking the maritime dimension will need to supplement Anderson with admiralty-specific sources and historical maritime dictionaries.
Neither Anderson's definition nor the Webster's 1913 entry addresses what volume, weight, or binding characteristics distinguish a packet from a loose letter or a larger parcel — boundaries that were, in practice, litigated and administratively defined by postal authorities rather than settled by dictionary definition alone.
Jurisdictional Note
Postal monopoly law in the United States was federal from an early date, so the classification of items as packets subject to federal postal statutes was primarily a federal question. In British and colonial sources, the term appears in the context of Crown postal prerogatives, where the same classification disputes arose. Researchers working across jurisdictions should not assume that a judicial interpretation of packet in one postal regime controls in another.