Source : Webster's Revised Unabridged Dictionary (1913)

Reading \Read"ing\, a.
   1. Of or pertaining to the act of reading; used in reading.

   2. Addicted to reading; as, a reading community.

   {Reading book}, a book for teaching reading; a reader.

   {Reading desk}, a desk to support a book while reading; esp.,
      a desk used while reading the service in a church.

   {Reading glass}, a large lens with more or less magnifying
      power, attached to a handle, and used in reading, etc.

   {Reading man}, one who reads much; hence, in the English
      universities, a close, industrious student.

   {Reading room}, a room appropriated to reading; a room
      provided with papers, periodicals, and the like, to which
      persons resort.

Source : WordNet®

reading room
     n : a room set aside for reading