In Judaism, Jeiheenom is analogous to the Christian idea of purgatory, where some go to do a short time for their sins, but eventually everyone (whether they go through Jeiheenom or not) will go to Jan-3eidhan, analogous to the idea of Heaven.
Purgatory in Judaism is called Sheol.
There is no eternal place of suffering like in Christianity/Islam.
Hud 11:107
"They shall reside in it till eternity, as long as the heavens and the earth exist,
unless your Lord ordains otherwise. Your Lord carries out whatever He wills."
Also, I also don't believe the word Jeiheenom is mentioned in the Torah
Seriously? Are you just arguing for the sake of arguing?
Nope, but getting a simple answer on a complex topic in Jewish theology wouldn't fit in a few Somalinet posts.
If you're in it for the long haul, here's Rambam on the topic with his intro to the commentary of Perek Helek of Mishnah:
http://www.mhcny.org/qt/1005.pdf
In the Talmud, there's a total of about 3 or 4 people that it said stayed in Jeiheenom forever (like Titus). Whereas in Islam, there's a lot of people going to Hell, forever, and its very explicit in the different ways they'll roast there and be tortured there, forever.
Sheol is not purgatory, the closest thing to it in Christian/Islamic terms is the grave.
Jeiheenom in the Torah is not referring to Hell but a place in Israel where pagans worshipped false gods and offered babies as sacrifices.