Pileus

//ˈpɪliəs// noun

Definitions

Noun
  1. 1
    The cap of a mushroom.

    "The stem is easily separable from the pileus at its junction, in this respect being similar to Amanita, Amanitopsis, Lepiota and others."

  2. 2
    a fruiting structure resembling an umbrella or a cone that forms the top of a stalked fleshy fungus such as a mushroom wordnet
  3. 3
    The bell of a jellyfish.
  4. 4
    A small thin cloud attached to a cumulus cloud.

    "The most short-lived of all the accessory clouds, pileus is also the most beautiful."

  5. 5
    A conical felt hat worn in Ancient Rome and Greece. Ancient-Rome, historical

    "Among the Romans the cap of felt was the emblem of liberty. When a slave obtained his freedom he had his head shaved, and wore instead of his hair an undyed pileus."

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  1. 6
    The top of the head of a bird, from the bill to the nape.

Etymology

Borrowed from Latin pīleus, a form of pilleus (“a felt cap”).

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