Source : Webster's Revised Unabridged Dictionary (1913)

Talmud \Tal"mud\, n. [Chald. talm[=u]d instruction, doctrine,
   fr. lamad to learn, limmad to teach.]
   The body of the Jewish civil and canonical law not comprised
   in the Pentateuch.

   Note: The Talmud consists of two parts, the Mishna, or text,
         and the Gemara, or commentary. Sometimes, however, the
         name Talmud is restricted, especially by Jewish
         writers, to the Gemara. There are two Talmuds, the
         Palestinian, commonly, but incorrectly, called the
         Talmud of Jerusalem, and the Babylonian Talmud. They
         contain the same Mishna, but different Gemaras. The
         Babylonian Talmud is about three times as large as the
         other, and is more highly esteemed by the Jews.

Source : WordNet®

Talmud
     n : the collection of ancient rabbinic writings on Jewish law
         and tradition (the Mishna and the Gemara) that constitute
         the basis of religious authority in Orthodox Judaism