tūval-qayin תּוּבַל־קַ֫יִן ‘Tubal-cain’ (Hebrew)
Etymology?:
apparently from yāval יָבַל ‘to conduct’, compare yᵊvūl יְבוּל ‘crops’, qayin קַ֫יִן ‘Kenite / Cain’
Roots:
יבל
tūval-qayin pr n m pers
Tubal-cain = "thou will be brought of Cain"
1) son of Lamech by his wife Zillah and the first worker in metal