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ex•e•dra(ˈɛk sɪ drə, ɛkˈsi-)
n., pl. ex•e•drae (ˈɛk sɪˌdri, ɛkˈsi dri)
1. (in ancient Greece and Rome) a recess in the wall of a courtyard or other open area, as in a palaestra, used for lectures or meetings.
2. a permanent outdoor bench, semicircular in plan and having a high back.
[1700–10; < Latin < Greek exédra=ex- ex-3 + (h)édra seat, bench]