*exedra*

‖n.; pl. Exedræ [ L., fr. Gr 'exe`dra; 'ex out + "e`dra seat.] 1. (Class. Antiq.) A room in a public building, furnished with seats. [1913 Webster]

2. (Arch.) (a) The projection of any part of a building in a rounded form. (b) Any out-of-door seat in stone, large enough for several persons; esp., one of curved form. [1913 Webster]