Source : Webster's Revised Unabridged Dictionary (1913)

Thammuz \Tham"muz\, Tammuz \Tam"muz\, n. [Heb. thamm[=u]z.]
   1. A deity among the ancient Syrians, in honor of whom the
      Hebrew idolatresses held an annual lamentation. This deity
      has been conjectured to be the same with the Ph[oe]nician
      Adon, or Adonis. --Milton.

   2. The fourth month of the Jewish ecclesiastical year, --
      supposed to correspond nearly with our month of July.

Source : WordNet®

Tammuz
     n 1: the tenth month of the civil year; the fourth month of the
          ecclesiastic year (in June and July) [syn: {Thammuz}]
     2: Sumerian and Babylonian god of pastures and vegetation;
        consort of Inanna [syn: {Dumuzi}]