WordNet (r) 3.0 (2006):

Zephaniah
    n 1: a Hebrew minor prophet of the late 7th century BC [syn:
         Zephaniah, Sophonias]
    2: an Old Testament book telling the prophecies of Zephaniah
       which are concerned mainly with the approaching judgment by
       God upon the sinners of Judah [syn: Zephaniah, Sophonias,
       Book of Zephaniah]

Easton's 1897 Bible Dictionary:

Zephaniah
   Jehovah has concealed, or Jehovah of darkness. (1.) The son of
   Cushi, and great-grandson of Hezekiah, and the ninth in the
   order of the minor prophets. He prophesied in the days of
   Josiah, king of Judah (B.C. 641-610), and was contemporary with
   Jeremiah, with whom he had much in common. The book of his
   prophecies consists of:

     (a) An introduction (1:1-6), announcing the judgment of the
   world, and the judgment upon Israel, because of their
   transgressions.

     (b) The description of the judgment (1:7-18).

     (c) An exhortation to seek God while there is still time
   (2:1-3).

     (d) The announcement of judgment on the heathen (2:4-15).

     (e) The hopeless misery of Jerusalem (3:1-7).

     (f) The promise of salvation (3:8-20).

     (2.) The son of Maaseiah, the "second priest" in the reign of
   Zedekiah, often mentioned in Jeremiah as having been sent from
   the king to inquire (Jer. 21:1) regarding the coming woes which
   he had denounced, and to entreat the prophet's intercession that
   the judgment threatened might be averted (Jer. 29:25, 26, 29;
   37:3; 52:24). He, along with some other captive Jews, was put to
   death by the king of Babylon "at Riblah in the land of Hamath"
   (2 Kings 25:21).

     (3.) A Kohathite ancestor of the prophet Samuel (1 Chr. 6:36).

     (4.) The father of Josiah, the priest who dwelt in Jerusalem
   when Darius issued the decree that the temple should be rebuilt
   (Zech. 6:10).


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

Zephaniah, the Lord is my secret