[1] : The Collaborative International Dictionary of English v.0.48

agaric \ag"aric\ ?; 277, n. l. agaricum, gr. ?, said to be
   fr. agara, a town in sarmatia.
   1. bot. a fungus of the genus agaricus, of many species,
      of which the common mushroom is an example.
      1913 webster

   2. an old name for several species of polyporus, corky
      fungi growing on decaying wood.
      1913 webster

   note: the "female agaric" polyporus officinalis was
         renowned as a cathartic; the "male agaric" polyporus
         igniarius is used for preparing touchwood, called
         punk or german tinder.
         1913 webster

   agaric mineral, a light, chalky deposit of carbonate of
      lime, sometimes called rock milk, formed in caverns or
      fissures of limestone.
      1913 webster
see also:
agaricus polyporus polyporus officinalis polyporus igniarius agaric mineral rock milk 

[2] : WordNet (r) 2.0

agaric
     n 1: fungus used in the preparation of punk for fuses syn: fomes
          igniarius
     2: a saprophytic fungus of the order agaricales having an
        umbrellalike cap with gills on the underside
see also:
fomes igniarius 

Agaric >> A Words
Agaric, definition of term: Agaric
agaric_pag1.html

Fly Agaric >> F Words
Fly Agaric, definition of term: Fly Agaric
fly+agaric_pag1.html