pileum
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pi·le·um
(pī′lē-əm)n. pl. pi·le·a (-lē-ə)
The top of a bird's head, extending from the base of the bill to the nape.
[New Latin pīleum, from Latin pīleus, felt cap.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
pileum
(ˈpaɪlɪəm; ˈpɪl-)n, pl -lea (-lɪə)
(Zoology) the top of a bird's head from the base of the bill to the occiput
[C19: New Latin, from Latin pileus]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
pi•le•um
(ˈpaɪ li əm, ˈpɪl i-)n., pl. pi•le•a (ˈpaɪ li ə, ˈpɪl i ə)
the top of the head of a bird, from the base of the bill to the nape.
[1870–75; < New Latin; Latin pīleum, neuter variant of pīleus felt cap]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.