A part of Jerusalem, first mentioned in 2 Chronicles 27:3 , where it is said that Jotham built much "on the wall of Ophel." Manasseh in his building, "compassed about Ophel and raised it up a very great height.' 2 Chronicles 33:14 . On the return from exile the Nethinim dwelt there. Nehemiah 3:26,27; Nehemiah 11:21 . It is supposed to have been at the S.E. corner of Jerusalem, outside the present walls, near the Virgin's fountain. The same word is translated 'tower' in 2 Kings 5:24 , as in the margin of some of the above passages.