'armorer' originates from Middle English, specifically the word 'armourer', ultimately from Old French 'armurier', where 'armure' meant 'armor' and Latin 'arma' meant 'arms, weapons'.

'armorer' changed from the Middle English word 'armourer', which came from Old French 'armurier'; this evolved into the modern English forms 'armorer' (US) and 'armourer' (UK).

Initially, it meant 'maker or supplier of armor'; over time the meaning expanded to include 'a person responsible for the maintenance and repair of weapons' in military and law-enforcement contexts.