pileum

noun
pi·​le·​um | \ ˈpī-lē-əm How to pronounce pileum (audio) \
plural pilea\ ˈpī-​lē-​ə How to pronounce pilea (audio) \

Definition of pileum

: the top of the head of a bird from the bill to the nape

First Known Use of pileum

1874, in the meaning defined above

History and Etymology for pileum

New Latin, from Latin pileus, pileum felt cap; akin to Greek pilos felt

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The first known use of pileum was in 1874

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