Princeton's WordNet

1. tabun, GA(noun)

   the first known nerve agent, synthesized by German chemists in 1936; a highly toxic combustible liquid that is soluble in organic solvents and is used as a nerve gas in chemical warfare

   Synonyms:
   atomic number 31, gallium, tabun

2. gallium, Ga, atomic number 31(noun)

   a rare silvery (usually trivalent) metallic element; brittle at low temperatures but liquid above room temperature; occurs in trace amounts in bauxite and zinc ores

   Synonyms:
   atomic number 31, gallium, tabun

3. Georgia, Empire State of the South, Peach State, GA(noun)

   a state in southeastern United States; one of the Confederate states during the American Civil War

   Synonyms:
   atomic number 31, gallium, tabun