First Known Use: 1715
Dictionary
pileus
noun pi·le·us \ˈpī-lē-əs\
plural pi·lei \-lē-ˌī\
Definition of PILEUS
1
[Latin] : a pointed or close-fitting cap worn by ancient Romans
2
: the convex, concave, or flattened spore-bearing structure of some basidiomycetes that is attached superiorly to the stem and typically is expanded with gills or pores on the underside —called also cap
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Origin of PILEUS
New Latin, from Latin
Medical Dictionary
pileus
noun pi·le·us \ˈpī-lē-əs\
plural pi·lei \-lē-ˌī\
Medical Definition of PILEUS
: the convex, concave, or flattened spore-bearing structure of some basidiomycetous fungi that is attached to the top of the stem and typically is expanded with gills or pores on the underside—called also cap
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