Definition of paxillus
1 capitalized : a genus of rusty-spored mushrooms (family Agaricaceae) having a fleshy thallus with no annulus and decurrent gills separating easily from the cap
2 plural paxilli \-səˌlī\ or paxilluses : any fungus of the genus Paxillus; especially : an edible mushroom (P. involutus)
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Origin and Etymology of paxillus
New Latin, from Latin, peg
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