fly agaric


a very poisonous common woodland mushroom, Amanita muscaria, having a glossy red or orange cap with white spots, formerly a fly poison.

Origin of fly agaric

First recorded in 1780–90 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for fly agaric

  • The fly-agaric is quite as poisonous as its more common relative, and is equally to be shunned.

    Health on the Farm|H. F. Harris

British Dictionary definitions for fly agaric

fly agaric


a saprotrophic agaricaceous woodland fungus, Amanita muscaria, having a scarlet cap with white warts and white gills: poisonous but rarely fatalSee also amanita

Word Origin for fly agaric

so named from its use as a poison on flypaper
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012