'discharger' originates from the Old French word 'descharger', where 'des-' meant 'away' and 'charger' meant 'to load'.

'descharger' transformed into the Middle English word 'discharge', and eventually became the modern English word 'discharger'.

Initially, it meant 'to unload or release', but over time it evolved into its current meaning of 'a device or person that releases something'.