Brit a permanent building on a sports ground, esp a cricket ground, containing changing rooms, etc
a light ornamental structure in a garden or, park, etc
a temporary structure for erected at an exhibition by an individual exhibitor at an exhibition
a large often sumptuous tent
a projecting or visually distinct part of a building forming part of a symmetrical composition
any of several detached or semidetached units into which a building, e.g. a hospital, is divided
[Middle English pavilon via French from Latin papilion-, papilio butterfly; because the flaps of a tent were thought to resemble a butterfly's wings]