round table is a noun meaning "a meeting of peers for discussion and exchange of views". It carries 2 recorded senses.
a meeting of peers for discussion and exchange of views
“a roundtable on the future of computing”
(legend) the circular table for King Arthur and his knights
legend
Definitions, synonyms and semantic relations for round table come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.