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Architecture.��

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

2. 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 vertical row or list.

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

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 (line ).

a formation of ships in single file.

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