All 6 Uses of

pavilion
in
The Return of the King

The greater number were on the right, where the Firienfeld was wider; and on the left there was a smaller camp, in the midst of which stood a tall pavilion.†
Chpt 5.3 *

pavilion = a large structure separate from a main structure or temporary

Slowly they passed through the short heath and upland grass, speaking no more, until they came to the king's pavilion.†
Chpt 5.3

In the inner part of the pavilion was a small space, curtained off with broidered hangings, and strewn with skins: and there at a small table sat Theoden with Eomer and Eowyn, and Dunhere, lord of Harrowdale.†
Chpt 5.3

And then Aragorn stood up, and all the host arose, and they passed to pavilions made ready, to eat and drink and make merry while the day lasted.†
Chpt 6.4

And there in the midst of the fields they set up their pavilions and awaited the morning; for it was the Eve of May, and the King would enter his gates with the rising of the Sun.†
Chpt 6.4

At last an evening came when from the walls the pavilions could be seen upon the field, and all night lights were burning as men watched for the dawn.†
Chpt 6.5

Definitions:

(1) (pavilion)
a large structure separate from a main structure
in various senses, including:
- a large roofed structure without walls -- often found in parks
- a temporary structure -- such as a large tent to house exhibits at a fair, to provide sports facilities, or to put on a show
- a section of a large hospital or office complex adjacent to other parts
(2) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

Much more rarely, pavilion can reference a facet of a gem or part of the outer ear.