Definition of "Tare" :
noun: (chemical analysis) a counterweight used in chemical analysis; consists of an empty container that counterbalances the weight of the container holding chemicals
noun: the weight of a motor vehicle, railroad car, or aircraft without its fuel or cargo
noun: weedy annual grass often occurs in grainfields and other cultivated land; seeds sometimes considered poisonous
noun: any of several weedy vetches grown for forage
noun: an adjustment made for the weight of the packaging in order to determine the net weight of the goods