Inflected forms: pl. co·lons 1a. A punctuation mark ( : ) used after a word introducing a quotation, an explanation, an example, or a series and often after the salutation of a business letter. b. The sign ( : ) used between numbers or groups of numbers in expressions of time (2:30 a.m.) and ratios (1:2). 2. Inflected forms: pl. co·la (-l) A section of a metrical period in quantitative verse, consisting of two to six feet and in Latin verse having one principal accent.
ETYMOLOGY:
Latin clon, part of a verse, from Greek klon, limb, member, metrical unit.