Embodiment of perfection (5)
I believe the answer is:
ideal
'embodiment of perfection' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ideal that I've seen before include "Quite perfect, can't be improved on" , "without a flaw" , "highly desirable" , "Model of excellence (5)." , "Perfectly suited" .)