/ pəˈvɪliən; NAmE / noun
1.
a temporary building used at public events and exhibitions :
the US pavilion at the Trade Fair
2.
( BrE ) a building next to a sports ground, used by players and people watching the game :
a cricket pavilion
3.
( NAmE ) a large building used for sports or entertainment :
the Pauley Pavilion, home of the university's basketball team
4.
a building that is meant to be more beautiful than useful, built as a shelter in a park or used for concerts and dances :
his first show at the Winter Gardens Pavilion, Blackpool
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WORD ORIGIN
Middle English (denoting a large decorated tent): from Old French pavillon , from Latin papilio(n-) butterfly or tent.