E ‧ sau /ˈiːsɔː/ BrE AmE
in the Old Testament of the Bible, the son of ↑ Isaac , and the older brother of ↑ Jacob , whose ↑ twin (=one of two children born at the same time) he was. Esau was very hungry and so he sold his ↑ birthright (=the property or possessions that he had a right to receive from his parents) to Jacob for ‘a mess of pottage’, that is for some soup that Jacob had made.