Science fiction award
I believe the answer is:
'science fiction award' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for hugo that I've seen before include "Victor ---, Fr. poet, novelist" , "French romantic writer, Victor, d. 1885" , "Jargon used by a particular group" , "Victor ---; --- Wolf" , "Victor -; French author (Les Miserables)" .)