[ey-buh
l; for 4 also Norw. ah-buhl] 
| 1. | the second son of Adam and Eve, slain by his brother, Cain. Gen. 4. |
| 2. | Sir Frederick Augustus, 1827–1902, English chemist: inventor of cordite. |
| 3. | I. W., 1908–87, U.S. labor leader: president of the United Steelworkers of America 1965–77. |
| 4. | Niels Hen⋅rik [neels hen-rik] , 1802–29, Norwegian mathematician. |
| 5. | a male given name. |