PILEUS
cap, pileus
(noun) a fruiting structure resembling an umbrella or a cone that forms the top of a stalked fleshy fungus such as a mushroom
Source: WordNet® 3.1
Etymology
Noun
pileus (plural pilei)
(mycology) The cap of a mushroom.
Meronym: hymenium
The bell of a jellyfish.
(meteorology) A small thin cloud attached to a cumulus cloud.
Synonyms: cap cloud, scarf cloud
Hypernym: accessory cloud
(historical, Ancient Rome) A conical felt hat worn in Ancient Rome and Greece.
Coordinate term: Phrygian cap
The top of the head of a bird, from the bill to the nape.
Synonym: crown
Anagrams
• epulis
Source: Wiktionary
Pi"le*us, n.; pl. Pilei. Etym: [L., a felt cap.]
1. (Rom. Antiq.)
Definition: A kind of skull cap of felt.
2. (Bot.)
Definition: The expanded upper portion of many of the fungi. See Mushroom.
3. (Zoรถl.)
Definition: The top of the head of a bird, from the bill to the nape.
Source: Webster’s Unabridged Dictionary 1913 Edition