|Easton's Bible Dictionary|
A stream, a descendant of Cain, and brother of Jubal; "the father of such as dwell in tents and have cattle" (Genesis 4:20). This description indicates that he led a wandering life.
Int. Standard Bible Encyclopedia
ja'-bal (yabhal, meaning uncertain): In Genesis 4:20, a son of Lamech by Adah. He is called `the father of those who dwell in tents and (with) herds.' So Gunkel, Gen3, 52, who says that the corresponding word in Arabic means "the herdsman who tends the camels." Skinner, Genesis, 120, says that both Jabal and Jubal suggest yobhel, which in Phoenician and Hebrew "means primarily `ram,' then `ram's horn' as a musical instrument, and finally `joyous music' (in the designation of the year of Jubilee)." See also Skinner, Genesis, 103, on the supposed connection in meaning with Abel.
David Francis Roberts
Jabal (1 Occurrence)
Genesis 4:20 Adah gave birth to Jabal, who was the father of those who dwell in tents and have livestock. (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV)