"Allegory of the cave" philosopher (5)
I believe the answer is:
plato
'allegory of the cave philosopher' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for plato that I've seen before include "Republic author" , "Philosopher of ancient Greece" , "Greek character" , "Ancient Athenian philosopher, pupil of Socrates" , "Ancient Greek philosopher" .)