in architecture, a round pillar, made to support and adorn a building, and composed of a base, a shaft, and a capital. See Architecture.

the military art, a long deep file of troops or baggage.

The first and second lines of the army as they are encamped, make generally two columns on a march, filing off either from the right or left: sometimes the army marches in four, six, or eight columns, according as the ground will allow; and each column is led by a general officer.