Hanun (hă'nun), favored. 1. The son of Nahash, king of the Ammonites. He disgraced David's ambassadors, and thus caused the ruin of his people. 2 Samuel 1:10-19, 1 Chronicles 19:2. One who, with the inhabitants of Zanoah, helped to repair the wall of Jerusalem. Nehemiah 3:13.. Another person, apparently, who also helped in repairing the wall. Nehemiah 3:30.