Tubal (tû'bal). Fifth son of Japheth, whose descendants probably peopled a country lying south of the Caucasus, between the Black Sea and the Araxes, whose inhabitants were the Tibareni of the Greeks. Genesis 10:2. The Circassians, who inhabit this region, were slave-dealers, and they of Tubal traded in the persons of men. Ezekiel 27:13; Ezekiel 38:2; comp. Revelation 18:13.