WordNet (r) 3.0 (2006):

Juda
    n 1: an ancient kingdom of southern Palestine with Jerusalem as
         its center [syn: Judah, Juda]

Easton's 1897 Bible Dictionary:

Juda
   (1.) The patriarch Judah, son of Jacob (Luke 3:33; Heb. 7:14).
   In Luke 1:39; Heb. 7:14; Rev. 5:5; 7:5, the word refers to the
   tribe of Judah.

     (2.) The father of Simeon in Christ's maternal ancestry (Luke
   3:30).

     (3.) Son of Joanna, and father of Joseph in Christ's maternal
   ancestry (26), probably identical with Abiud (Matt. 1:13), and
   with Obadiah (1 Chr. 3:21).

     (4.) One of the Lord's "brethren" (Mark 6:3).