Definition of "Column" :

noun: (architecture) a tall vertical cylindrical structure standing upright and used to support a structure

noun: a vertical cylindrical structure standing alone and not supporting anything (such as a monument)

noun: a vertical glass tube used in column chromatography; a mixture is poured in the top and washed through a stationary substance where components of the mixture are adsorbed selectively to form colored bands

noun: any tubular or pillar-like supporting structure in the body

noun: a page or text that is vertically divided

"The newspaper devoted several columns to the subject."

noun: an article giving opinions or perspectives

noun: a line of units following one after another

noun: a vertical array of numbers or other information

"He added a column of numbers."

noun: anything that approximates the shape of a column or tower

"The test tube held a column of white powder."