Colon (kōl&obreve_;n), n. [L. colon, colum, limb, member, the largest of the intestines, fr. Gr. kw^lon, and in sense of the intestine, kolon: cf. F. colon. Cf. Colic.] 1. (Anat.) That part of the large intestines which extends from the cæcum to the rectum. [See Illust. of Digestion.]
[1913 Webster]

2. (Gram.) A point or character, formed thus [:], used to separate parts of a sentence that are complete in themselves and nearly independent, often taking the place of a conjunction.
[1913 Webster]