colonel

Origin

First attested in the 1540s, from Middle French coronnel, from Old Italian colonnello (“the officer of a small company of soldiers (column) that marched at the head of a regiment”), from compagnia colonnella (“little column company”), from Latin columna (“pillar”), originally a collateral form of columen, contraction culmen (“a pillar, top, crown, summit”), o-grade form from a Proto-Indo-European *kelH- (“to rise, be elevated, be prominent”). See hill, holm. The French spelling was reformed late 16th century.