Source : Webster's Revised Unabridged Dictionary (1913)

Pack \Pack\, n.
   1. (Med.) In hydropathic practice, a wrapping of blankets or
      sheets called {dry pack}, {wet pack}, {cold pack}, etc.,
      according to the condition of the blankets or sheets used,
      put about a patient to give him treatment; also, the fact
      or condition of being so treated.

   2. (Rugby Football) The forwards who compose one half of the
      scrummage; also, the scrummage.

   {Pack and prime} {road or way}, a pack road or bridle way.