What does the "hall of fame" mean? In what circumstances could I use it?

Native speaker’s answer
Rebecca
In informal terms, "hall of fame" refers to the class or category of those who have excelled in a particular activity or field. For example, a "Rock and Roll Hall of Fame." In this case, the speaker is saying that this decision can be seen as legendary, groundbreaking, or very important. Ex: I know many hockey Hall of Famers in real life because my dad was a professional hockey player. Ex: Who do you think should be inducted into the Rock and Roll Hall of Fame?