TRICLINIUM Meaning of TRICLINIUM in English n. (pl. triclinia) Rom. Antiq. 1 a dining-table with couches along three sides. 2 a room containing this. [ L f. Gk triklinion (as TRI-, kline couch) ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012