Adullam (a-dŭl'lam), justice of the people. Joshua 15:35. An ancient and royal city in Judah, 15 or 20 miles southwest of Jerusalem. The king of the place was slain by Joshua. It was fortified by Rehoboam, and, probably on account of its strength, was called the glory of Israel. Micah 1:15. Near this city was a cave, where David secreted himself when he fled from Achish. The cave is described by a modern traveller as uneven, intricate, and very capacious; he says it is perfectly plain that 400 men might conceal themselves in the sides of the cave, as David's men did, and escape observation. 1 Samuel 22:1.