The Collaborative International Dictionary of English v.0.48:
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. [1913 Webster] Then came a stretch of grass and a little more elbowroom. --W. G. Norris. [1913 Webster]