Tri*clin"i*um (?), n.; pl. Triclinia (#). [L., from Gr. , ; (see Tri-) + a couch.] Rom. Antiq. (a)
A couch for reclining at meals, extending round three sides of a table, and usually in three parts.
(b)
A dining room furnished with such a triple couch.
© Webster 1913.