1. An adjustment made for the weight of the packaging in order to determine the net weight of the goods Noun
2. Any of several weedy vetches grown for forage Noun
3. Weedy annual grass often occurs in grainfields and other cultivated land; seeds sometimes considered poisonous Noun
4. The weight of a motor vehicle, railroad car, or aircraft without its fuel or cargo Noun
5. (chemical analysis) a counterweight used in chemical analysis; consists of an empty container that counterbalances the weight of the container holding chemicals Noun