tubal

from WordNet (r) 3.0 (2006)

tubal
    adj 1: of or relating to occurring in a tube such as e.g. the
           Fallopian tube or Eustachian tube; "tubal ligation";
           "tubal pregnancy"

from The Collaborative International Dictionary of English v.0.48

Tubal \Tub"al\, a.
   Of or pertaining to a tube; specifically, of or pertaining to
   one of the Fallopian tubes; as, tubal pregnancy.
   [1913 Webster]

from Easton's 1897 Bible Dictionary

Tubal
(1.) The fifth son of Japheth (Gen. 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.

from Hitchcock's Bible Names Dictionary (late 1800's)

Tubal, the earth; the world; confusion