n pl : a large family of fungi (order Agaricales) that contains the genera Agaricus and Amanita and includes many familiar mushrooms with the sporophore usu. consisting of a central stalk and a cap like an umbrella on the lower surface of which are numerous lamellae bearing the hymenium .
Similar sounding terms: Agar·i·cus
Published under license with Merriam-Webster, Incorporated. © 1997-2018.