different between pileus vs pileup

English

Etymology

Borrowed from Latin pilleus (“a felt cap”).

Pronunciation

• IPA^(key): /?p?li?s/
• Homophone: pileous

Noun

pileus (plural pilei)

1. (mycology) The cap of a mushroom.

   Meronym: hymenium

   • 1994, Barry H. Rumack, David G. Spoerke, Handbook of Mushroom Poisoning: Diagnosis and Treatment, CRC Press (?ISBN), page 75:

     One must check the size and shape of the pileus as well as its color. Many weird and unexpected shapes are found in the mushroom kingdom.

2. The bell of a jellyfish.
3. (meteorology) A small thin cloud attached to a cumulus cloud.

   Synonyms: cap cloud, scarf cloud

   Hypernym: accessory cloud

   • 2011, Gavin Pretor-Pinney, The Cloud Collector's Handbook, Hachette UK (?ISBN)

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

4. (historical, Ancient Rome) A conical felt hat worn in Ancient Rome and Greece.

   Coordinate term: Phrygian cap

   • 1859, William Smith (ed.), Dictionary of Greek and Roman Antiquities, page 920:

     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.

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

   Synonym: crown

Translations

Further reading

• pileus (meteorology) on Wikipedia.Wikipedia
• pileus (hat) on Wikipedia.Wikipedia
• pileus (mycology) on Wikipedia.Wikipedia

Anagrams

• epulis

Latin

Pronunciation

• (Classical) IPA^(key): /?pi?.le.us/, [?pi???e?s?]
• (Ecclesiastical) IPA^(key): /?pi.le.us/, [?pi?l?us]

Noun

p?leus m (genitive p?le?); second declension

1. Alternative spelling of pilleus

Declension

Second-declension noun.

References

• p?l?us (pill-) in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette, page 1,181/1

English

Noun

pileup (plural pileups)

1. Alternative spelling of pile-up

Anagrams

• luppie, uppile