En hebreo significa efímero, y también hijo.
Adam and Eve had two sons. The youngest, Abel was a shepherd, while his older brother, Cain, was farmer. On one occasion both made offerings to God. Cain offered a portion of their crops while Abel decided to offer the best and biggest of his sheep. God was pleased with Abel's offering, but not Cain's. And like Cain could find no reason for this favoritism, he was very angry and bitter with God and with his brother, Abel. As it was not wise to be angry with God, turned his rage against his younger brother. Abel followed when heading to the field and attacked and murdered there.Source:Wikipedia