1. Probably a bastion of the citadel of Zion, at Jerusalem, mentioned in the history of David and Solomon, 2 Samuel 5:9 2 Kings 12:20 1 Chronicles 11:8 2 Chronicles 32:5 .

2. The name of a family or of a fortress at Shechem; in the latter case, the "house of Millo" would mean the garrison of that fortress, Judges 9:6 .