|Easton's Bible Dictionary|
Leviticus 16:8-26; R.V., "the goat for Azazel" (q.v.), the name given to the goat which was taken away into the wilderness on the day of Atonement (16:20-22). The priest made atonement over the scapegoat, laying Israel's guilt upon it, and then sent it away, the goat bearing "upon him all their iniquities unto a land not inhabited."
At a later period an evasion or modification of the law of Moses was introduced by the Jews. "The goat was conducted to a mountain named Tzuk, situated at a distance of ten Sabbath days' journey, or about six and a half English miles, from Jerusalem. At this place the Judean desert was supposed to commence; and the man in whose charge the goat was sent out, while setting him free, was instructed to push the unhappy beast down the slope of the mountain side, which was so steep as to insure the death of the goat, whose bones were broken by the fall. The reason of this barbarous custom was that on one occasion the scapegoat returned to Jerusalem after being set free, which was considered such an evil omen that its recurrence was prevented for the future by the death of the goat" (Twenty-one Years' Work in the Holy Land). This mountain is now called el-Muntar.
Noah Webster's Dictionary
1. (n.) A goat upon whose head were symbolically placed the sins of the people, after which he was suffered to escape into the wilderness.
2. (n.) Hence, a person or thing that is made to bear blame for others.
Int. Standard Bible Encyclopedia
Scapegoat (3 Occurrences)
Leviticus 16:8 Aaron shall cast lots for the two goats; one lot for Yahweh, and the other lot for the scapegoat. (WEB KJV NAS NIV)
Leviticus 16:10 But the goat, on which the lot fell for the scapegoat, shall be presented alive before Yahweh, to make atonement for him, to send him away for the scapegoat into the wilderness. (WEB KJV NAS NIV)
Leviticus 16:26 "He who lets the goat go for the scapegoat shall wash his clothes, and bathe his flesh in water, and afterward he shall come into the camp. (WEB KJV NAS NIV)