The Ophel (Hebrew: עופל), also Graecised to Ophlas, the biblical name apparently given to a certain part of a settlement or city that is elevated from its surroundings, probably means fortified hill or risen area. In the Hebrew Bible the Ophel refers to a specific part in two cities: the extended City of David (the oldest part of Jerusalem), as in the Book of Chronicles and the Book of Nehemiah (2 Chronicles 27:3; 33:14, Nehemiah 3:26; 11:21), and at Samaria, the ancient capital of the Kingdom of Israel, mentioned in the Second Book of Kings (2 Book of Kings 5:24). The Mesha Stele is the only extra-biblical source using the word, also in connection to a fortified area.
Ophel, with the definite article ha-ophel, is a common noun known from two Ancient Semitic languages, Biblical Hebrew and Moabitic. As a place name or description it appears several times in the Hebrew Bible and once on the Mesha Stele from Moab. There is no ultimate agreement as to its exact meaning, and scholars have long been trying to deduce it from the different contexts it appears in. When used as a common noun, it has been translated as "tumors" (1 Samuel 5:9, 12; 6:5), and in a verbal form it was taken to mean "puffed up" (Habakkuk 2:4), this indicating that the root might be associated with "swelling". When referring to a place, it seems from the context to mean either hill, or fortified place, or a mixture of the two, i.e. a fortified hill, and by considering the presumed meaning of the root, it might signify a "bulging or rounded" fortification.