Author of The Hobbit (7)
I believe the answer is:
tolkien
'author of the hobbit' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for tolkien that I've seen before include "professor of Anglo-Saxon" , "JRR ---, fantasy writer" , "Middle Earth creator" , "British author of 'The Lord of the Rings'" , "British writer, d. 1973, known for fantasy adventures" .)