The Collaborative International Dictionary of English v.0.48:

Araba \A*ra"ba\, n. [Written also aroba and arba.] [Ar. or
   Turk. 'arabah: cf. Russ. arba.]
   A wagon or cart, usually heavy and without springs, and often
   covered. [Oriental]
   [1913 Webster]

         The araba of the Turks has its sides of latticework to
         admit the air                            --Balfour
                                                  (Cyc. of
                                                  India).
   [Webster 1913 Suppl.]

Easton's 1897 Bible Dictionary:

Arba
   four, a giant, father of Anak. From him the city of Hebron
   derived its name of Kirjath-arba, i.e., the city of Araba (Josh.
   14:15; 15:13; 21:11; Gen. 13:18; 23:2). (See HEBRON.)


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

Arba, four