Article of cargo.
Article of cargo. A unit of cargo, other than a liquid, gas, or aggregate that lacks physical structure (e.g., grain, gravel, etc.) including articles grouped together so that they can be handled as a single unit or unitized by wrapping, strapping, banding or edge protection device.
Source
49 CFR § 393.5
Scoping language
As used in this part, the following words and terms are construed to mean: