Word of the Day 4.25.08
pi·le·us (p
l
-
s)
n. pl. pi·le·i (-l-
)
1. Botany The umbrellalike fruiting structure forming the top of a stalked fleshy fungus, such as a mushroom; the cap.
2. A brimless round skullcap worn by ancient Romans.
3. See caul.
