What is Abel?

Abel definition and meaning on Dictionary terms:
the second son of Adam and Eve, slain by his brother, Cain. Gen. 4.
Sir Frederick Augustus,1827a??1902, English chemist: inventor of cordite.
I. W.,1908a??87, U.S. labor leader: president of the United Steelworkers of America 1965a??77.
Niels HenA.rik [neels hen-rik] /nils E?hE?na??rEak/, 1802a??29, Norwegian mathematician.
a male given name.


reference: https://www.dictionary.com/browse/abel