Elbow room 

barely enough(or not enough)room

Could you speak to me somewhere else? I have only elbow room here.

Elbow room by Light Joker October 8, 2004

Elbow Room 

Enough space to elbow someone in the face.

(friend says something stupid) Come here I don't have enough elbow room.

Elbow Room by Hi00150 November 30, 2011