Mil’lo (a rampart, mound), a place in ancient Jerusalem. Both name and place seem to have been already in existence when the city was taken from the Jebusites by David. 2 Sam. 5:9; 1 Chron. 11:8. Its repair or restoration was one of the great works for which Solomon raised his “levy,” 1 Kings 9:15, 24; 11:27; and it formed a prominent part of the fortifications by which Hezekiah prepared for the approach of the Assyrians. 2 Chron. 32:5. The last passage seems to show that “the Millo” was part of the “city of David,” that is, of Zion. Comp. 2 Kings 12:20.