horse mushroom(redirected from horse mushrooms)
Also found in: Thesaurus.
(Plants) a large edible agaricaceous field mushroom, Agaricus arvensis, with a white cap and greyish gills
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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