1. A temporary movable habitation; a large tent; a marquee; especially, a tent raised on posts. [The] greeks do pitch their brave pavilions.
2. A single body or mass of building, contained within simple walls and a single roof, whether insulated, as in the park or garden of a larger edifice, or united with other parts, and forming an angle or central feature of a large pile.
3. A flag, colours, ensign, or banner.
5. That part of a brilliant which lies between the girdle and collet.
6. (Science: anatomy) The auricle of the ear; also, the fimbriated extremity of the fallopian tube.
7. A covering; a canopy; figuratively, the sky. The pavilion of heaven is bare. (Shelley)
Origin: F. Pavillon, fr. L. Pavilio a butterfly, also, a tent, because spread out like a butterfly's wings.