(countable) A column is a support that is standing up and is built to support something, usually on a building.
Synonyms:pillarandpost The White House was built with several columns' on the front side of the building to help support the building and prevent it from falling down.
(countable) A column is a line of items in a table that goes from top to bottom.
Antonym:row The title of the second column in the table is "Population in 2009".