'aiver' originates from Middle English, specifically the word 'aver,' where 'aver' meant 'property or goods, especially livestock.'

'aver' transformed into the Scottish word 'aiver,' and eventually became the modern English word 'aiver' through regional dialects.

Initially, it meant 'property or goods, especially livestock,' but over time it evolved into its current meaning of 'horse, especially a workhorse.'