'bandager' originates from English, formed from the noun 'bandage' with the agentive suffix '-er'; 'bandage' itself comes from Old French 'bandage', ultimately related to 'bande' meaning 'a strip'.

'bandage' changed from Old French 'bandage' (from 'bande'/'bander') into Middle English 'bandage', and English later formed the agent noun 'bandager' by adding '-er' to denote 'one who bandages'.

Initially, the related word meant 'a strip used for binding' or 'the action of binding'; over time it came to mean 'material used to dress wounds', and then extended to refer to 'one who applies bandages' ('bandager').