exedra
noun
ex·e·dra ˈek-sə-drə 
plural exedrae ˈek-sə-ˌdrē
-ˌdrī
or exedras 1
: a room (as in a temple or house) in ancient Greece and Rome used for conversation and formed by an open or columned recess often semicircular in shape and furnished with seats
2
: a large outdoor nearly semicircular seat with a solid back
Word History
Etymology
Latin, from Greek, from ex- + hedra seat — more at sit
First Known Use
1659, in the meaning defined at sense 1