n. A narrow pass between two mountain peaks: a term used in English by some writers on alpine geology and mountaineering.n. The assimilated form of com-, con-, before l. See com-, con-.n. An abbreviation of Colonel as a title, andn. of Colossians.n. [lowercase] An apothecaries' abbreviation of coliander, an obsolete form of coriander.n. A name given by Abercrom by in 1887 to the region on a weather-map between two anticyclones, where the isobars show a connecting neck or narrow region of lower pressure analogous to the col that affords a passage from one mountain peak to its neighbor: not to be confounded with a trough or an area of low pressure.