'aegagropile' originates from Greek, specifically the word 'aigagros,' where 'aix' meant 'goat' and 'agros' meant 'field.'

'aigagros' transformed into the Latin word 'aegagropila,' and eventually became the modern English word 'aegagropile.'

Initially, it meant 'a ball of goat hair,' but over time it evolved into its current meaning of 'a ball of hair or fibrous material found in the stomachs of some animals.'