A "pavilion" is a structure, often open or partially enclosed, that serves a variety of purposes such as a shelter in a park, a place for gathering or entertainment, or an architectural feature in larger buildings like museums or exhibition halls. Pavilions are usually characterized by their decorative design and can be used for relaxation, dining, or as a space for events.
The word "pavilion" comes from the Middle English term paviloun, which is derived from the Old French pavillon. This, in turn, comes from the Latin papilionem, meaning "butterfly," referencing the fluttering nature or the shape of the structure.