Naris, the word for ‘nostril’ in Latin, is used in the plural (nares) to mean ‘nose’. The Latin word derives from the Greek verb ναω meaning ‘to flow’ (just as the Greek word for ‘nose’ (ῥις, ῥινος) dervies from ῥεω, another verb meaning ‘to flow’). So the nose is associated radically with its flux―a throwback, perhaps, to an ancient theory of humours.

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