Source : Webster's Revised Unabridged Dictionary (1913)

Smoking \Smok"ing\,
   a. & n. from {Smoke}.

   {Smoking bean} (Bot.), the long pod of the catalpa, or
      Indian-bean tree, often smoked by boys as a substitute for
      cigars.

   {Smoking car}, a railway car carriage reserved for the use of
      passengers who smoke tobacco.