WordNet (r) 3.0 (2006):

destroying angel
    n 1: fungus similar to Amanita phalloides [syn: destroying
         angel, Amanita verna]
    2: extremely poisonous usually white fungus with a prominent
       cup-shaped base; differs from edible Agaricus only in its
       white gills [syn: death cap, death cup, death angel,
       destroying angel, Amanita phalloides]