It seems there is a small misunderstanding! "Frank Baum" is not a word or a term with a general meaning; rather, it refers to a specific person: L. Frank Baum (1856-1919), an American author best known for writing children's books, particularly "The Wonderful Wizard of Oz."
When you mention "L. Frank Baum," remember that you are talking about a significant figure in children's literature, known for his imaginative storytelling and memorable characters.