gray column n.
Any of the three masses of gray matter that extend longitudinally through the center of each lateral half of the spinal cord and appear as gray horns in transverse sections.
For minutes—and for minutes that seemed like years—the gray column stood and staggered before the blow; then yielded and fled.
Staring where his son pointed, Sam saw a gray column about four feet high, with four smooth lateral sides.
Colonel Muller had taken to horse and was riding furiously to rally incoming reinforcements for the gray column.
The press of canvas she carried made her loom up high, end-on, like a gray column standing motionless directly in our wake.
But the gray column of Confederates toiling up the mountain road was singularly tempting.