From the Hebrew name עֵשָׂו ('Esaw)
which possibly meant "hairy". In the Old Testament
Esau is the elder of the twin sons of Isaac
. Once when he was very hungry he sold his birthright to his twin Jacob
for a bowl of stew. Later Jacob disguised himself as Esau and received the elder son's blessing from the blind Isaac. Esau was the ancestor of the Edomites.