All 5 Uses

pavilion
in
The House of Hades
(Auto-generated)

The dining pavilion had collapsed into a pile of white rubble, and the Big House was on fire, its windows glowing like demon eyes.†
p. 61.4 *

pavilion = a large structure separate from a main structure or temporary
The scenes from back home—the campfire sing-alongs, dinners at the pavilion, volleyball games outside the Big House—just seemed to make his friends sad.†
p. 65.2
Giants, six-armed Earthborn, and wild Cyclopes charged from the beach, tearing down the dining pavilion, setting fire to the cabins and the Big House.†
p. 166.9
She thought about sitting in the dining pavilion, watching the sunset over Long Island Sound.†
p. 168.2
The note appeared in the sacrificial fire at our dining pavilion.†
p. 251.2

Definitions:

(1) (pavilion)
a large building or section of a building that stands apart in function or design -- often used for gatherings, exhibitions, or specialized purposes
(2) (meaning too rare to warrant focus)
Much more rarely, pavilion can reference a facet of a gem or part of the outer ear.