Source : Webster's Revised Unabridged Dictionary (1913)

Elbowroom \El"bow*room`\, n.
   Room to extend the elbows on each side; ample room for motion
   or action; free scope. ``My soul hath elbowroom.'' --Shak.

         Then came a stretch of grass and a little more
         elbowroom.                               --W. G.
                                                  Norris.