Source : Webster's Revised Unabridged Dictionary (1913)

   2. That which has occurred in a day; a day's work or travel;
      a day's journey. [Obs. & R.] --B. Jonson.

   3. (Mach.) That portion of a rotating piece, as a shaft,
      axle, spindle, etc., which turns in a bearing or box. See
      Illust. of {Axle box}.

   {Journal box}, or {Journal bearing} (Mach.) the carrier of a
      journal; the box in which the journal of a shaft, axle, or
      pin turns.

Source : WordNet®

journal box
     n : metal housing for a journal bearing