(1.) The fifth son of Japheth (Genesis 10:2).

(2.) A nation, probably descended from the son of Japheth. It is mentioned by Isaiah (66:19), along with Javan, and by Ezekiel (27:13), along with Meshech, among the traders with Tyre, also among the confederates of Gog (Ezek. 38:2, 3; 39:1), and with Meshech among the nations which were to be destroyed (32:26). This nation was probably the Tiberini of the Greek historian Herodotus, a people of the Asiatic highland west of the Upper Euphrates, the southern range of the Caucasus, on the east of the Black Sea.

Noah Webster's New International Dictionary of the English Language

(a.) Of or pertaining to a tube; specifically, of or pertaining to one of the Fallopian tubes; as, tubal pregnancy.