Tubal-cain, Tubalcain

Boyd’s Bible Dictionary:

Son of Lamech the Cainite, by Zillah
He was instructor of artificers in brass and iron (Gen. 4:22).

Concise Bible Dictionary:

Son of Lamech and Zillah. He was an instructor of every artificer in brass and iron, or a forger of every kind of brass and iron tool (Gen. 4:22).
It is remarkable, and it is doubtless not without a purpose, that these metals should be mentioned so early. It quite confutes the theory that all mankind have risen from some degraded position, and that they must have passed long periods in using stone implements before they used metals. This may be true of some who fell far below the moral status of Adam and Eve after their fall. Romans 1:24, 26 explains much: “God gave them up” to their lusts because they turned their backs on Him.

Strong’s Dictionary of Hebrew Words:

Transliteration:
Tuwbal
Phonic:
Qayin
Meaning:
apparently from 2986 (compare 2981) and 7014; offspring of Cain; Tubal-Kajin, an antidiluvian patriarch
KJV Usage:
Tubal-cain

Jackson’s Dictionary of Scripture Proper Names:

thou wilt be brought of Cain

Potts’ Bible Proper Names:

Flowing forth of Cain; possessor of the world:―son of Lamech by Zillah, Gen. 4:22. {Profluvium Caini}