pileus

pileus is defined in Webster's Unabridged Dictionary (1913) with 2 senses. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.(Bot.) The expanded upper portion of many of the fungi. See Mushroom.
  2. 2.(Zoöl.) The top of the head of a bird, from the bill to the nape.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

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