'muzzle' originates from Old French, specifically the word 'musel,' where 'mus-' meant 'mouth.'

'musel' transformed into the Middle English word 'musel,' and eventually became the modern English word 'muzzle.'

Initially, it meant 'mouth or snout of an animal,' but over time it evolved into its current meanings, including the device to prevent biting and the act of silencing.