round table

Short definition from Wiktionary

Noun

1. 1
   A conference at which participants of similar status discuss and exchange views.
2. 2
   A television show segment in which pundits or reporters discuss current events.
3. 3
   Used other than figuratively or idiomatically: see round, table.

Verb

1. 1
   To discuss at a round table conference.

Proper noun

1. 1
   King Arthur's table in the Arthurian legend, around which he and his knights congregate, all having equal status since the table has no head.