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.  © 1997-2024.