/ Dictionary / Index T triclinium: Meaning and Definition of Find definitions for: tri•clin•i•um Pronunciation: (trī-klin'ē-um), [key] — pl. -clin•i•a a couch extending along three sides of a table, for reclining on at meals. a dining room, esp. one containing such a couch. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: triclinium (Thesaurus) triclinic tricolette Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language