The crossword solution for the term 'STAR INSIDE OF A HAT' is HEADLINER, which is a 9 letter word. HEADLINER is a term used to describe a performer or act that is the main attraction of a show or event. It is often used in the context of a music concert, where the HEADLINER is the artist or band that is the most popular or well-known. The phrase 'STAR INSIDE of a HAT' is a metaphor for a HEADLINER, as it implies that the STAR is hidden away and only revealed when the HAT is opened.