The definition of a connoisseur is a person who is an expert at something or who has informed and discriminating taste. An example of connoissuer is an art expert who only likes certain great artists. A person who has expert knowledge and keen discrimination in some field, esp. in the fine arts or in matters of taste.

What do connoisseur means?

Full Definition of connoisseur

1 : expert especially : one who understands the details, technique, or principles of an art and is competent to act as a critical judge a connoisseur of music.

What is called a person who knows a lot?

renowned expert. An expert is a person who is very skilled at doing something or who knows a lot about a particular subject.