Strong's #8423: Tuwbal Qayin (pronounced too-bal' kah'-yin)

apparently from 2986 (compare 2981) and 7014; offspring of Cain; Tubal-Kajin, an antidiluvian patriarch:--Tubal-cain.

Brown-Driver-Briggs Hebrew Lexicon:

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tûbal qayin

Tubal-cain = "thou will be brought of Cain"

1) son of Lamech by his wife Zillah and the first worker in metal

Part of Speech: noun proper masculine

Relation: apparently from H2986 (compare H2981) and H7014

Usage:

This word is used 2 times:

 

Genesis 4:22: "also bore Tubal-cain, an instructor of every artificer in brass"
Genesis 4:22: "in brass and iron: and the sister of Tubal-cain was Naamah."