colon: There are two distinct words colon in English. Colon ‘part of the large intestine’ [16] comes via Latin from Greek kólon, which meant ‘food, meat’ as well as ‘large intestine’. Colon the punctuation mark [16] comes via Latin from Greek kōlon, which originally meant literally ‘limb’. It was applied metaphorically (rather like foot) to a ‘unit of verse’, and hence to a ‘clause’ in general, meanings which survive in English as technical terms. From there it was a short step to the main present-day meaning, ‘punctuation mark’. [colon etymology, colon origin, 英语词源]