"Invisible Man" writer Ellison (5)
I believe the answer is:
ralph
'invisible man writer ellison' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ralph that I've seen before include "N Waldo Emerson, nineteenth century US poet" , "Chap" , "Boy's name" , "Man's name" , "Fellow's name" .)