organophosphate nerve agent: any of a series of nerve agents containing organophosphate compounds first synthesized by German chemists in 1936; in World War II the Germans tested them in concentration camps but not on the battlefield; Iraq is alleged to have used them against Iran and against the Kurds
nerve gas: a toxic gas that is inhaled or absorbed through the skin and has harmful effects on the nervous and respiratory system
breach of warranty: a breach that occurs when an item is deficient according to the terms of a warranty