Architecture .

a rigid, relatively slender, upright support, composed of relatively few pieces.

a decorative pillar, most often composed of stone and typically having a cylindrical or polygonal shaft with a capital and usually a base.

any columnlike object, mass, or formation

a column of smoke.

a vertical row or list

Add this column of figures.

a vertical arrangement on a page of horizontal lines of type, usually typographically justified

There are three columns on this page.

a regular feature or series of articles in a newspaper, magazine, or the like, usually having a readily identifiable heading and the byline of the writer or editor, that reports or comments upon a particular field of interest, as politics, theater, or etiquette, or which may contain letters from readers, answers to readers' queries, etc.

a long, narrow formation of troops in which there are more members in line in the direction of movement than at right angles to the direction ( distinguished from line ).

a formation of ships in single file.

Botany . a columnlike structure in an orchid flower, composed of the united stamens and style.

noun

cavalcade , company , file , list , platoon , queue , rank , row , string , train , brace , buttress , caryatid , colonnade , cylinder , mast , minaret , monolith , monument , obelisk , pedestal , peristyle , pier , pilaster , post , prop , pylon , shaft , standard , stay , stele , support , totem , tower , underpinning , upright , tier , article , formation , line , parade , pillar , pl. peristyle , portico , procession , stack