Source : Webster's Revised Unabridged Dictionary (1913)

Phrase \Phrase\, n. [F., fr. L. phrasis diction, phraseology,
   Gr. ?, fr. ? to speak.]
   1. A brief expression, sometimes a single word, but usually
      two or more words forming an expression by themselves, or
      being a portion of a sentence; as, an adverbial phrase.

            ``Convey'' the wise it call. ``Steal!'' foh! a fico
            for the phrase.                       --Shak.

   2. A short, pithy expression; especially, one which is often
      employed; a peculiar or idiomatic turn of speech; as, to
      err is human.

   3. A mode or form of speech; the manner or style in which any
      one expreses himself; diction; expression. ``Phrases of
      the hearth.'' --Tennyson.

            Thou speak'st In better phrase and matter than thou
            didst.                                --Shak.

   4. (Mus.) A short clause or portion of a period.

   Note: A composition consists first of sentences, or periods;
         these are subdivided into sections, and these into
         phrases.

   {Phrase book}, a book of idiomatic phrases. --J. S. Blackie.

Source : WordNet®

phrase book
     n : a book containing common expressions in a foreign language
         along with their translations