ag·a·ric 
(ăgər-ĭk, ə-gărĭk)
(ăgər-ĭk, ə-gărĭk)n.
1. Any of numerous mushrooms having an umbrellalike cap with gills beneath, chiefly belonging to the order Agaricales.
2. The dried fruiting body of certain fungal species in the genus Fomes, formerly used in medicine, especially to inhibit the production of sweat.
[Middle English agarik, a kind of fungus, from Latin agaricum, from Greek agarikon, from Agariā, a town in Sarmatia.]