1. a device attached to a car’s exhaust system to reduce noise
2. a warm scarf worn around the neck

Examples

• The car’s muffler was damaged and needed to be replaced.
• A broken muffler makes the engine very loud.
• She wrapped a wool muffler around her neck before going outside.
• He bought a new muffler to keep warm during winter.
• The mechanic installed a new muffler on the truck.
• Her grandmother knitted her a beautiful red muffler.
• The old muffler was rusted and falling apart.