Ten Commandments mountain (5)

I believe the answer is:

sinai

'ten commandments mountain' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for sinai that I've seen before include "Egyptian location" , "11 Across peninsula" , "desert area" , "Mountainous peninsula in Egypt" , "Deserted area" .)

I've seen this clue in the Newsday.

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