1) Ancient Roman furniture 
The `stibadium` (plural: stibadia) is a later form of the Roman lectus triclinaris, the reclining seat used by diners in the triclinium. Originally, the lecti were arranged in a group of three in a semi-circle. The stibadium was a single semi-circular couch which replaced the triple group of lecti in the dining-room, frequently in alcoves around.....[moth] Stibadium was a genus of moths of the Noctuidae family, it is now considered a synonym of Plagiomimicus. ==Former Species== ...
semicircular couch