- the sound made by a small internal-combustion engine or imitative of its operation.
- a small internal-combustion engine, or something, as a boat or model airplane, equipped with one: the sound of distant put-puts on the lake.
- to operate with sounds suggesting a put-put, as a small motor or motor-driven device.
- a light chugging or popping sound, as made by a petrol engine
- a vehicle powered by an engine making such a sound
- to make or travel along with such a sound