Why is the ninth month called September?
mid-15c., "vertical division of a page," also "a pillar, post," from Old French colombe (12c., Modern French colonne "column, pillar"), from Latin columna "pillar," collateral form of columen "top, summit," from PIE root *kel- "to project" (see hill). Sense of "matter written for a newspaper" dates from 1785.
column col·umn (kŏl'əm)
Any of various tubular or pillarlike supporting structures in the body, such as the spinal column, each generally having a single tissue origin and function.