Lewis Short
inter-cŏlumnĭum (noun N) : columna
* The space between two columns, intercolumniation: ambulationis,Cic. Q. Fr. 3, 1, 2, § 5: signa omnibus intercolumniis disposita,Cic. Verr. 2, 1, 19; Vitr. 3, 1; 4, 3; Vulg. 1 Reg. 7, 31.
Charlton T. Lewis, Charles Short, A Latin Dictionary