Amasa (ăm'a-sah), burden. 1. A kinsman of David, and chief captain in Absalom's rebel army. David pardoned Amasa, but he was assassinated by Joab. 2 Samuel 17:25; 2 Samuel 19:13; 2 Samuel 20:9-10; 1 Chronicles 2:17. 2. A descendant of Ephraim. 2 Chronicles 28:1-27 :