1. A small pack or package; a little bundle or parcel; as a packet of letters.
2. A dispatch-vessel; a ship or other vessel employed by government to convey letters from country to country or from port to port.
3. A vessel employed in conveying dispatches and passengers from place to place, or to carry passengers and goods coastwise.
PACK'ET, verb intransitive To ply with a packet or dispatch-vessel.