The term STAR PART can be broken down into three crossword solutions: LEAD (4 letters), HERO (4 letters), and LEADROLE (8 letters). LEAD is a verb meaning to guide or direct, while HERO is a noun referring to a person who is admired for their courage, outstanding achievements, or noble qualities. Finally, LEADROLE is a combination of the two words, referring to the main character in a movie, play, or other performance.