[pa.vil.ion] n [ME pavilon, fr. OF paveillon, fr. L papilion-, papilio butterfly; perh. akin to OHG fifaltra butterfly] (13c) 1 a: a large often sumptuous tent b: something resembling a canopy or tent "tree ferns spread their delicate ~s --Blanche E. Baughan"
2. a: a part of a building projecting from the rest b: one of several detached or semidetached units into which a building is sometimes divided 3 a: a light sometimes ornamental structure in a garden, park, or place of recreation that is used for entertainment or shelter b: a temporary structure erected at an exposition by an individual exhibitor
4: the lower faceted part of a brilliant below the girdle--see brilliant illustration
[2]pavilion vt (14c): to furnish or cover with or put in a pavilion