Hypertext Webster Gateway: "pileus"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Pileus \Pi"le*us\, n.; pl. {Pilei}. [L., a felt cap.]
1. (Rom. Antiq.) A kind of skull cap of felt.
2. (Bot.) The expanded upper portion of many of the fungi.
See {Mushroom}.
3. (Zo["o]l.) The top of the head of a bird, from the bill to
the nape.
From WordNet (r) 1.7 (wn)
pileus
n : a fruiting structure resembling an umbrella that forms the
top of a stalked fleshy fungus such as a mushroom [syn: {cap}]
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