Mountain climbed by Moses (5)
I believe the answer is:
sinai
'mountain climbed by moses' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sinai that I've seen before include "Mountain in Egypt" , "Part of 10 [EGYPT]" , "Deserted area" , "Mountain source of Mosaic Law" , "Biblical mount" .)