trinitroglycerin
     n : a heavy yellow poisonous oily explosive liquid obtained by
         nitrating glycerol; used in making explosives and
         medically as a vasodilator (trade names Nitrospan and
         Nitrostat) [syn: {nitroglycerin}, {nitroglycerine}, {glyceryl
         trinitrate}, {Nitrospan}, {Nitrostat}]
Source: WordNet® 2.0