🔼The name Tubal in the Bible
In the Bible there's one person named Tubal (תבל) and one more named Tubal-cain (תובל־קין). Tubal-cain and his brothers Jabal and Jubal and sister Naamah are the last in line from Cain, the cursed son of Adam and Eve (Genesis 4:22). Just Tubal descends from Cain's youngest brother Seth, and is a son of Japheth, who is a son of Noah (Genesis 10:2).
🔼Etymology of the name Tubal
The name Tubal comes from the verb יבל (yabal) generally meaning to bring, carry, lead, conduct:
Jones' Dictionary of Old Testament Proper Names settles for the general meaning of the root-verb and reads Flowing Forth for the meaning of the name Tubal. However, identical to the name Tubal is our root's derivative תבל (tebel), meaning world. Hence the name Tubal means World, but the inhabited world; the world-economy in its broadest sense.
Neither BDB Theological Dictionary nor NOBSE Study Bible Name List translates this name.