1. One who is learned in the art of dining; also said to be, one who is an adept conversationalist at the dinner table.
2. A master of the art of dining: taken from the title of the Greek work of Atheneus, in which a number of learned men are represented as dining together and discussing subjects that range from the dishes before them to literary criticism and miscellaneous topics of every description.

An abnormal fear of dining, dinner conversation, and of carrying on a conversation while eating. Individuals who have this fear usually eat their meals in silence and request silence from their companions at the table.