From Ottoman Turkishجهنم(cehennem), from Arabicجَهَنَّم(jahannam), from Hebrewגהינום(Gehinóm), from גַּיא בֶּן הִנֹּם(Gé bén Hinóm, “Valley of Hinnom's Son”). Compare Macedonian џенем(dženem), and obsolete and dialectal Bulgarian джендем(džendem).