in Ancient Geography, a valley in the suburbs, and to the east of Jerusalem, either a part of or conjoined with the valley of Kidron, (Joshua;) infamous for sacrificing children, or passing them through the fire. The place in the valley where the idol stood to which the sacrifice was made, was called Tophet, (2 Kings xxiii. 10. Jer. vii. 31, 32, and xix. 2.), from beating drums or tabours to drown the cries or shrieks of the children : called also Geenon or the Valley of Ennon; whence some derive Gehenna, the place of future punishment.