1. a steam locomotive or a person who operates a steam locomotive
Usage: British; informal; chiefly historical
2. something that chuffs or makes a chuffing sound
Usage: informal

Examples

• The old chuffer pulled into the station with a cloud of steam.
• Children loved watching the chuffer chug along the railway tracks.
• The chuffer's rhythmic sound echoed through the valley.
• He worked as a chuffer for thirty years before retiring.
• The vintage chuffer is now a museum piece.