biblical son of Isaac and Rebecca, elder twin who sold his birthright to his brother Jacob for "a mess of pottage" (Genesis xxv), hence "used symbolically for: one who prefers present advantage to permanent rights or interests" [OED].
erythema
erythro-
Erzgebirge
*es-
Esalen
Esau
escadrille
escalade
escalate
escalation
escalator