■ noun
1》 Brit. a building at a cricket ground or other sports ground used for changing and taking refreshments.
2》 a summer house or other decorative shelter in a park or large garden.
↘a marquee with a peak and crenellated decorations, used at a show or fair.
↘a temporary stand in which items are displayed at a trade exhibition.
3》 a detached or semi-detached block at a hospital or other building complex.
Origin
ME: from OFr. pavillon , from L. papilio(n-) 'butterfly or tent'.