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(Plants) a large edible agaricaceous field mushroom, Agaricus arvensis, with a white cap and greyish gills
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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|Noun||1.||horse mushroom - coarse edible mushroom with a hollow stem and a broad white cap|
agaric - a saprophytic fungus of the order Agaricales having an umbrellalike cap with gills on the underside
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