triclinium
Concise Oxford English Dictionary © 2008 Oxford University Press:
triclinium /trʌɪˈklɪnɪəm, trɪ-, -ˈklʌɪn-/
▶noun (pl. triclinia /-nɪə/) a dining table with couches along three sides, used in ancient Rome.
■ a room containing such a table.
– origin L., from Gk triklinion, from tri- ‘three’ + klinē ‘couch’.
'triclinium' also found in these Oxford entries:

