Deipnosophist \dyp-NOS-uh-fist\ noun
1. Someone who is skilled in table talk.
Origin: Deipnosophist comes from the title of a work written by the Greek Athenaeus in about 228 AD, Deipnosophistai, in which a number of wise men sit at a dinner table and discuss a wide range of topics. It is derived from deipnon, "dinner" + sophistas, "a clever or wise man."