tu.val qa.yin is the proper name of the man identified as a maker of bronze and iron tools.

The attested use identifies a named man in the account where he is described as forging tools of bronze and iron.

1. A named maker of metal tools · dominant

   In Genesis 4:22, the form is marked as a proper noun and identifies the man whom the verse places in Zillah's family line and describes as forging tools of bronze and iron. The APB renders the verse, "Zillah also bore Tubal-cain, who forged all kinds of tools of bronze and iron."

   Genesis 4:22

In the Anselm Project Bible: In Genesis 4:22, the APB presents the name as "Tubal-cain" and identifies him as a forger of bronze and iron tools.