agaric
1. any saprotrophic basidiomycetous fungus of the family Agaricaceae, having gills on the underside of the cap. The group includes the edible mushrooms and poisonous forms such as the fly agaric
2. the dried spore-producing bodies of certain fungi, esp Polyphorus officinalis (or Boletus laricis), formerly used in medicine
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005