tare in WordNet English dictionary

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