Gay icon Marilyn (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
monroe
(Other definitions for monroe that I've seen before include "5th US president, James" , "See 3" , "Marilyn - - (films)" , "Marilyn ___ , film icon" , "Marilyn . . . . . ., tragic Hollywood icon" .)