___ Christie (6)
I believe the answer is:
agatha
'christie' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for agatha that I've seen before include "-- Christie, English novelist" , "Girl" , "- Christie, twentieth century crime novelist" , "Detective story writer" , "Writer who created Hercule Poirot, . . . . . . Christie" .)