Keanu Reeves's character in The Matrix (3)
I believe the answer is:
neo
'keanu reeves's character in the matrix' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for neo that I've seen before include "Prefix meaning new of modern form of" , "language" , "Prefix donating new" , "Prefix meaning new or recent" , "Prefix meaning new - try one" .)