'blunt-nosed' originates from English, combining the adjective 'blunt' (from Middle English 'blunt', possibly influenced by Middle Dutch 'blont' meaning 'dull') and the noun 'nose' (from Old English 'nosu'), with the adjectival suffix '-ed' forming 'having a nose that is ...'.

'blunt' was used in Middle English as 'blunt' (meaning dull or obtuse) and 'nose' comes from Old English 'nosu'; the compound 'blunt-nosed' arose in Modern English as a straightforward descriptive compound (adjective + noun + -ed) and became established in general and zoological descriptions.

Initially it literally described 'having a dull or rounded nose'; over time the meaning has remained largely the same, used descriptively for animals and sometimes for faces or objects.