Barzillai (bär-zĭl'la-î or lâi), iron, of iron. 1. A Gileadite, distinguished for his hospitality and liberality towards David during the revolt of Absalom. 2 Samuel 17:27, 2 Samuel 1:19-39, 1 Kings 2:7.. The father of Adriel. 1 Samuel 18:19, 2 Samuel 21:8.. One of the priests. Ezra 2:61, Nehemiah 7:63.